Driving game playerεργασίες

Φίλτρο

Οι πρόσφατες αναζητήσεις μου
Φιλτράρισμα κατά:
Προϋπολογισμός
σε
σε
σε
Είδος
Δεξιότητες
Γλώσσες
    Κατάσταση Δουλειάς
    2,000 driving game player δουλειές που βρέθηκαν, με τιμές EUR

    Αναζητείται ένας έμπειρος προγραμματιστής WordPress για ένα webzine/webradio. Αυτή η σύμβαση περιλαμβάνει πολλά επιμέρους έργα (διόρθωση σφαλμάτων WordPress, δημιουργία υποσελίδων σε υπάρχ&o...

    €198 (Avg Bid)
    €198 Μέση Προσφορά
    25 προσφορές
    radio player on website Έχει λήξει left

    Θέλω έναν player για site ραδιοφωνικού σταθμού, ο οποίος θα βρίσκεται πάντα στο κάτω μέρος της σελίδας και θα είναι ανοιχτός ακόμη κι όταν αλλάζουν οι σελίδες του site.

    €58 (Avg Bid)
    €58 Μέση Προσφορά
    3 προσφορές

    Ψάχνω designer για εναν 3d character rigged χωρίς χαρακτηριστικά προσώπου (μορφή "τέρατος") μορφή αρχείου .fbx for game στο unity

    €335 (Avg Bid)
    €335 Μέση Προσφορά
    9 προσφορές

    For education reason i want to create a smart play bot to play ultimate tic tac toe game. The target of my project is that bot to be unbeatable against the user. All programming languages are free to use. Χρειάζομαι να δημιουργήσω ένα AI bot για το παιχνίδι Ultimate tic tac toe το οποίο να είναι ανίκητο εναντίον ενός χρήστη που θα παίξει αντίπαλ&...

    €142 (Avg Bid)
    €142 Μέση Προσφορά
    7 προσφορές

    Απασχόληση με μίσθωμα για εκτέλεση ενός μεγάλου Video Game project τρίτου προσώπου.

    €19 / hr (Avg Bid)
    €19 / hr Μέση Προσφορά
    1 προσφορές
    developer script Έχει λήξει left

    Ζητείται Game Developer για ένα project που να γνωρίζει από: C++, scripter, Java. Εκτίμηση του project 5000€. Η τιμή θα καθοριστεί από τον developer εφόσον ακούσει ολόκληρο το project. [Removed by Freelancer.com admin]

    €3965 (Avg Bid)
    €3965 Μέση Προσφορά
    4 προσφορές

    Χρειάζομαι να ξαναχτίσω μια υπάρχουσα ιστοσελίδα Σχεδιάστε και χτίστε το Άλλο ή όχι σίγουρος I need a page with a photo of a game map in the background where me and my squad can add some kind of pins on the map for organising our gameplay

    €21 (Avg Bid)
    €21 Μέση Προσφορά
    1 προσφορές

    Θέλουμε ένα απλό 2D arcade video game χωρίς πολλές απαιτήσεις σε γραφικά, που να προσομοιώνει την παραγωγή ενός σωλήνα χάλυβα. η χρήση θα είναι από μηχανικούς σε τεχνικές εκθέσ&ep...

    €7557 (Avg Bid)
    €7557 Μέση Προσφορά
    1 προσφορές

    Θέλουμε ένα απλό 2D arcade video game χωρίς πολλές απαιτήσεις σε γραφικά, που να προσομοιώνει την παραγωγή ενός σωλήνα χάλυβα. η χρήση θα είναι από μηχανικούς σε τεχνικές εκθέσ&ep...

    €7 - €7
    €7 - €7
    0 προσφορές
    Project for dimkazakos Έχει λήξει left

    Kαλησπέρα, έχω μια σελίδα σε wordpress το Mαζί με τον player έχω 2 widget, που ανανεώνουν τα δεδομένα ανάλογα με πιο κανάλι παίζει. Για κάποιον λόγο μετά από 1 ώρα το 2ο widget παγώνει και δεν α&...

    €19 (Avg Bid)
    €19 Μέση Προσφορά
    1 προσφορές
    Project for jomin1992 Έχει λήξει left

    Kαλησπέρα, έχω μια σελίδα σε wordpress το Mαζί με τον player έχω 2 widget, που ανανεώνουν τα δεδομένα ανάλογα με πιο κανάλι παίζει. Για κάποιον λόγο μετά από 1 ώρα το 2ο widget παγώνει και δεν α&...

    €19 (Avg Bid)
    €19 Μέση Προσφορά
    1 προσφορές
    ANDROID GAME Έχει λήξει left

    Ενα απλό Android Game (κάτι σαν "πυροβολώντας διάφορους κινούμενους στόχους") το οποίο πρέπει να αναπτυχθεί με το unity ή με το Android Studio. Θα πρέπει να συνοδευτεί με 6000 λέξεις τε&kap...

    €902 (Avg Bid)
    €902 Μέση Προσφορά
    6 προσφορές

    Θελω μια εφαρμογή για να παίζει ο user Tichu, είτε offline είτε online. Δουλεύω σε μία απο τις μεγαλύτερε; εταιρίες στον χώρο του app promotion και ενδιαφέρομαι να αρχίσω τα δικά μου projects εφ&a...

    €1152 (Avg Bid)
    €1152 Μέση Προσφορά
    7 προσφορές

    Θελω μια εφαρμογη στην οποία ο χρήστης θα μπορεί να παίζει tichu offline & online. (μέσω facebook access)

    €5 - €11 / hr
    €5 - €11 / hr
    0 προσφορές
    Tichu Game for Android Έχει λήξει left

    Θελω μια εφαρμογή για το κινητό στην οποία θα μπορείς να παίζεις tichu, είτε με default offline players είτε να μπορείς να συνδεθείς και να παίξεις μέσω facebook. Δίνω μεγάλη έμφαση στο οτι πρέπ&eps...

    €8 / hr (Avg Bid)
    €8 / hr Μέση Προσφορά
    2 προσφορές

    Σεταρισμα openwrt router για on line game.Να κατεβει το ping οσο περισσοτερο γινεται,να μειωθει το lag,βελτιωση hit detection κτλ.

    €7 - €27
    €7 - €27
    0 προσφορές

    Ζητείτε προγραμματιστής για βελτίωση και διόρθωσή του ηδύ υπάρχοντος script.

    €363 (Avg Bid)
    €363 Μέση Προσφορά
    4 προσφορές

    Αφορά την δημιουργία μιας σελίδας που θα αφήνει τους χρήστες να κάνουν live stream αλλά και να βλέπουν άλλους χρήστες να κάνουν live stream. Οι τεχνολογίες του player αλλά και...

    €1296 (Avg Bid)
    €1296 Μέση Προσφορά
    2 προσφορές

    ΧΡΕΙΑΖΟΜΑΣΤΕ ΚΑΠΟΙΟΝ ΝΑ ΜΑΣ ΦΤΙΑΞΕΙ ΕΝΑ HTML RADIO PLAYER ΕΤΣΙ ΑΚΡΙΒΩΣ ΟΠΩΣ ΘΑ ΤΟΥ ΠΟΥΜΕ ΓΙΑ ΤΟ ΡΑΔΙΟΦΩΝΙΚΟ ΜΑΣ ΣΤΑΘΜΟ. ΑΥΤΑ ΠΟΥ ΘΑ ΕΧΕΙ ΟΠΩΣΔΗΠΟΤΕ ΕΙΝΑΙ Ν&Alpha...

    €27 - €227
    €27 - €227
    0 προσφορές

    ΧΡΕΙΑΖΟΜΑΣΤΕ ΚΑΠΟΙΟΝ ΝΑ ΜΑΣ ΦΤΙΑΞΕΙ ΕΝΑ HTML RADIO PLAYER ΕΤΣΙ ΑΚΡΙΒΩΣ ΟΠΩΣ ΘΑ ΤΟΥ ΠΟΥΜΕ ΓΙΑ ΤΟ ΡΑΔΙΟΦΩΝΙΚΟ ΜΑΣ ΣΤΑΘΜΟ. ΑΥΤΑ ΠΟΥ ΘΑ ΕΧΕΙ ΟΠΩΣΔΗΠΟΤΕ ΕΙΝΑΙ Ν&Alpha...

    €236 (Avg Bid)
    €236 Μέση Προσφορά
    2 προσφορές
    youtube player Έχει λήξει left

    Εχω ενα webradio και θα ηθελα ενα script το οποιο θα παιρνει τους τιτλους των τραγουδιων ( που εμφανιζονται στο site μου ) και θα εμφανιζεται ενας youtube player ο οποιος θ&...

    €463 (Avg Bid)
    €463 Μέση Προσφορά
    7 προσφορές

    Θέλουμε κάποιον να δημιουργήσει, ένα Player για τον διαδικτυακό ραδιοφωνικό μας σταθμό ο οποίος θα μπορεί, εκτός της αναμετάδοσης απο το server μας να μπορεί να κάνε&io...

    €27 - €227
    €27 - €227
    0 προσφορές
    Σχεδιάστε σε Flash Έχει λήξει left

    Σχεδιασμός απλού video game με δυνατοτητα ελεγχου ηχητικων δειγματων απο εικονες του background του.

    €196 (Avg Bid)
    €196 Μέση Προσφορά
    3 προσφορές
    Ajaxify my website Έχει λήξει left

    Καλησπέρα, έχω ένα wordpress site στο οποίο έχω εγκαταστήσει ένα music-player plugin το οποίο υπάρχει σε μπάρα στο κάτω μέρος της σελίδας. Το πρόβλημα μου είναι πως κάθε φορά που κάνεις load ένα &k...

    €185 (Avg Bid)
    €185 Μέση Προσφορά
    2 προσφορές
    Online Broswer Game Έχει λήξει left

    Έχω σχεδιάσει ένα online browser game με θέμα το ποδόσφαιρο και αναζητώ έναν προγραμματιστή/συνεργάτη για να δημιουργήσει το project σύμφωνα με τις οδηγίες μου και τις παρατηρήσει...

    €7967 (Avg Bid)
    €7967 Μέση Προσφορά
    13 προσφορές
    3D σχεδιαστής Έχει λήξει left

    Είμαστε μια ομάδα που αποτελείται από έναν σεναριογράφο,έναν προγραμματιστή και έναν μουσικό και ξεμείναμε από σχεδιαστή 3d γραφικών για ένα adventure game που δουλεύουμ&eps...

    €325 (Avg Bid)
    €325 Μέση Προσφορά
    1 προσφορές

    I am a project manager for a software company responsible for designing and engineering slot machines. We are launching a new family of games and we are looking for a sound designer to remake and engineer sound for this new family.

    €918 (Avg Bid)
    €918 Μέση Προσφορά
    9 προσφορές

    I need to buy some old Google Play Apps that are no longer in operation but are still online. If you have them, come and exchange them for money! Ideal Skills and Experience: • Experience with app hunting and app archival databases • Knowledge of and experience with multiplayer game applications • Familiarity with the Android platform Your tasks: • Track down the orignal application • When found, confirm if it's still operational and supports multiplayer functionality. If you fit the bill and can help me on this rediscovery journey, I would love to hear from you.

    €449 (Avg Bid)
    €449 Μέση Προσφορά
    18 προσφορές

    I need to buy some old Google Play Apps that are no longer in operation but are still online. If you have them, come and exchange them for money! Ideal Skills and Experience: • Experience with app hunting and app archival databases • Knowledge of and experience with multiplayer game applications • Familiarity with the Android platform Your tasks: • Track down the orignal application • When found, confirm if it's still operational and supports multiplayer functionality. If you fit the bill and can help me on this rediscovery journey, I would love to hear from you.

    €1105 (Avg Bid)
    €1105 Μέση Προσφορά
    39 προσφορές

    I am seeking an experienced game developer for an Oculus Rift flight simulation game set in an airport environment. Experience in developing virtual reality games, particularly with flight simulations, is a necessity. Skills and expertise required include: - Proficiency in Oculus Rift SDK - Experience in creating flight simulation games - Previous work on airport-based environments preferred - Strong understanding of game physics The game should be captivating, realistic, and engaging, providing a surreal flying experience to users. The picked developer should be ready to exchange ideas, provide innovative input and demonstrate passion in VR game development.

    €442 (Avg Bid)
    €442 Μέση Προσφορά
    37 προσφορές

    As a dedicated game developer, my aim is to provide a compelling gaming experience to English-speaking gamers. I am urgently in need of a skilled translator who can translate, proofread, and localize gaming content from Spanish, French and German into English. Objectives: - Translation and proofreading of approximately 1000-5000 words of game content ensuring the quality of English version. - Localization to reflect cultural nuances while maintaining the game's original intent. Required Skills and Experience: - Proficiency in Spanish, French, German, and English - Proven experience with game content translation and localization - Excellent proofreading skills with a keen eye for details - Understanding of gaming terminologies and culture. Please provide examp...

    €19 / hr (Avg Bid)
    €19 / hr Μέση Προσφορά
    10 προσφορές
    Korean Dubbing for Game Explanation Video 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We will provide game videos of no more than 30 seconds. We need workers to dub the videos. At the same time, the dubbing requires real people to appear. Reference video: Also, the target language I need is Korean.

    €85 (Avg Bid)
    €85 Μέση Προσφορά
    15 προσφορές

    I am looking for a skilled video editor to create a short, less than 10-minute, sports video focusing on showcasing specific exciting moments. With your creative editing skills, the final video should capture the thrill, pace, and excitement of the game in a captivating way. Ideal Skills: - Proficiency in professional video editing software - Experience with sports video editing - A strong sense of timing and visual awareness - A knack for storytelling through video elements Responsibilities include: - Selecting footage showcasing the exciting moments - Adding appropriate music, effects, and transitions to enhance the visual impact - Ensuring the video is of professional standard and less than 10 minutes long.

    €57 (Avg Bid)
    €57 Μέση Προσφορά
    16 προσφορές
    Shopify Store Sales Booster 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    My foremost objective is to bolster sales of my Shopify store. I would appreciate a comprehensive marketing plan to highlight three product lines: clothing, electronics, and home decor. My primary target audience is male. As an ideal freelancer for this job, it's key for you to have: - Experience in creating effectiv...three product lines: clothing, electronics, and home decor. My primary target audience is male. As an ideal freelancer for this job, it's key for you to have: - Experience in creating effective e-commerce marketing strategies - Knowledge of marketing trends, especially related to clothing, electronics, and home decor - Proven skills in targeting the male demographic - Exceptional proficiency in driving website traffic and increasing sales Let's drive...

    €367 (Avg Bid)
    €367 Μέση Προσφορά
    41 προσφορές
    Unity Developer -- 2 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    ...Developer to bring game concept to life. Despite being in the initial stages of planning, I'm geared towards a simulation genre that is both engaging and innovative. Here’s what I anticipate needing from the ideal candidate: Key Requirements: - Expert knowledge in Unity Engine - Proven experience in games development - Proficient in programming Additional Skills: - Flexibility in incorporating features - Strong problem-solving and critical-thinking skills - Creative mindset and attention to detail - Excellent communication, able to work with minimal guidance Responsibilities: - Develop game from concept to completion - Collaborate closely to refine game mechanics - Optimize the game for PC performance Experience Level: - Portfolio showcasing pr...

    €9 / hr (Avg Bid)
    €9 / hr Μέση Προσφορά
    12 προσφορές

    I need a skilled video editor to create engaging, less than a minute, brand promotion videos. These videos should be packed with animation effects and seamless transitions. In this project, your creativity and understanding of brand storytelling will be instrumental in driving the viewer's engagement. Mastery of editing software for creating animation effects and seamless video transitions is necessary. Previous experience in brand promotion video editing will be an added advantage.

    €12 (Avg Bid)
    €12 Μέση Προσφορά
    17 προσφορές

    I have an iOS game developed in Objective-C and using Spritekit that has a memory leak problem identified during gameplay. My need is for an expert programmer to find and close this leak to ensure the smooth running of the game. Ideal Skills and Experience: • Proficiency in Objective-C programming language • Experience in game development using Spritekits • Proven ability to identify and fix memory leaks • Capacity to troubleshoot issues during gameplay Your proposal should clearly demonstrate your past experience with similar projects and your approach to identifying and fixing such problems.

    €129 (Avg Bid)
    €129 Μέση Προσφορά
    9 προσφορές

    I'm seeking an experienced digital marketer to help increase brand awareness, drive website traffic, and generate leads through a Facebook marketing campaign. Here's what I need: - An engaging, strategic advertising campaign targeting teenagers and young adults, working professionals, as well as parents and families. - Development and refinement of targeted ad content - Eff...well as parents and families. - Development and refinement of targeted ad content - Efficient utilization of a budget of less than $500 Ideal skills and experience: - Proven social media management skills - Expertise in Facebook Ads Manager - Ability to create high-engagement content - Proficient in audience targeting - Budget management ability - Demonstrated experience in lead generation and driving...

    €83 (Avg Bid)
    €83 Μέση Προσφορά
    24 προσφορές
    Unique FPS lootbox / lootcrate 3D Renderings 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm on the hunt for a talented 3D artist to breathe life into my video game project with unique lootbox designs. Key Details: - I require 10 creative renderings. - The theme should revolve around FPS game loot boxes, taking inspiration from popular games such as CS:GO and Fortnite. - The 3D renderings need to be basic - simple shapes and colors are preferable. Ideal Candidate: - Proficient in 3D modeling and rendering. - Has a passion for video games, particularly FPS titles. - Creativity and the ability to generate unique designs. - Proven ability to adhere to project specifications and timelines. Combine your creativity and gaming passion with this unique 3D modeling project. Looking forward to your unique render! Please include samples of similar projects you&#...

    €16 / hr (Avg Bid)
    €16 / hr Μέση Προσφορά
    39 προσφορές
    Anime Game Artist -- 3 6 μέρες left

    I'm developing a JRPG and require professional help in creating assets. This includes: - Character sprites and portraits - monster sprites - Backgrounds - Scenes As for the aesthetic, my aim is having an anime-styled flavor though it was not distinctly mentioned in the discussion. Please provide past examples, I attached what design I am going for (using ai). Character/monster sprites should work for rpg maker. There should be a male character and other characters but these two needed as a starting point.

    €340 (Avg Bid)
    €340 Μέση Προσφορά
    40 προσφορές

    I am seeking a skilled web developer to construct an app, specifically designed to display my personally crafted games. This platform will exist exclusively on the web. Key Specifications: - Users should be able to create personal accounts. - The app should embody a 3D immersive design, providing a unique and captivating user experience. Skills and Experience Required: - Experience in web app development - Proficiency in creating user account systems - Expertise in employing 3D immersive design elements.

    €1365 (Avg Bid)
    €1365 Μέση Προσφορά
    77 προσφορές

    ...This is a remote position that offers flexibility and growth opportunities. As a Sales Manager, you will be responsible for managing a team of individuals, developing standard operating procedures (SOPs) and training guides, creating effective sales scripts, and building a strong team infrastructure. The ideal candidate should have a proven track record in telemarketing sales and a passion for driving results. Responsibilities: Manage and lead a team of sales professionals to achieve sales targets and objectives Develop and implement effective telemarketing sales strategies and campaigns Create and optimize sales scripts that align with our company's values and goals Build and maintain a strong sales team infrastructure, including hiring, training, and performance manageme...

    €46 / hr (Avg Bid)
    €46 / hr Μέση Προσφορά
    3 προσφορές

    I am in need of an expert who can calculate the driving distance, driving time and toll cost from a specific street address to other suburbs. I have a list of 686 suburbs including suburb name, postcode, longitude, and latitude data which is detailed in a spreadsheet. To succeed in this project, you would ideally need: - Proficiency in using programming languages that can efficiently work with location data. While I'm open to suggestions, the languages I had in mind included Python, JavaScript and Java. - Ability to deliver a solution which calculates the time and distance for driving from the given address to all listed suburbs. - Knowledge to ensure the output is well-formatted, easy to understand, and implemented into the current spreadsheet structure. If ...

    €61 (Avg Bid)
    €61 Μέση Προσφορά
    62 προσφορές

    We are looking for a talented artist to create a hand-drawn concept art of a fantasy Skeletal OverLord. The artwork should capture the intimidating and powerful nature of the character. The concept art will be used for game design and promotional material. The artist should have a strong understanding of fantasy art and be able to create highly detailed and intricate designs. Key skills required for this job include: - Proficiency in hand drawing - Strong imagination and creativity - Knowledge of fantasy art styles - Ability to conceptualize and bring characters to life

    €298 (Avg Bid)
    €298 Μέση Προσφορά
    62 προσφορές

    Key Responsibilities. - Create levels for an Obby game on the Roblox platform. Skills and experience: - Experience in game development for the Roblox platform - Familiar with “Fall guys” - Have Programming skills. - Insightful and deep understanding of game progression and player engagement In applying for this program, I highly encourage freelancers to share their experience.

    €3942 (Avg Bid)
    €3942 Μέση Προσφορά
    9 προσφορές

    I'm seeking an Unreal Engine developer to create a Sci-fi themed 3rd person action game, . Key Responsibilities: - Build a high-quality 3rd person action game. - All assets have been purchased. - Develop fighting mechanics to engage players. Required Skills and Experience: - Proficiency in Unreal Engine and game development. - Strong experience in creating 3rd person action games. Hello In the beginning, I only want to create a prototype to present to the investors. Afterwards I will have you to complete the whole game with the investment money. I will send you the pdf with some game information. There is a link for a video. This is the city that will be built later with the investment money. For the prototype, I only need one street, the bu...

    €1070 (Avg Bid)
    €1070 Μέση Προσφορά
    35 προσφορές

    I'm seeking a jack-of-all-trades i...seeking a jack-of-all-trades in design and tech; someone with vast capabilities in graphic and UI/UX design, as well as game design for iOS platforms. The scope extends to drone and Raspberry Pi projects, in addition to web design. Your proficiency in embedded systems programming, web development, mobile app development, Arduino, and video game design will be crucial. Understanding a beginner's perspective will be key, as the project requires design and coding deliverables easy for beginners to grasp and use. Key Skills & Experience: - Graphic, UI/UX, Web and iOS game design - Coding prowess in Web & Mobile app development - Proficient with Raspberry Pi, Arduino and Drones - Game Design and Development - A...

    €19 / hr (Avg Bid)
    €19 / hr Μέση Προσφορά
    80 προσφορές
    Social Media Marketing Magician 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm seeking an exper...of a new social media accounts or managing existing accounts with Meta compliace and rules for business accounts. We are looking for: - Expertise in managing social media accounts for business , specifically with Facebook,Instagram, whatsapp. - Expertise in social media marketing, specifically with Facebook and Instagram. - Proven track record of boosting brand awareness. - Solid experience in driving targeted traffic to social media accounts and websites. - Mastery in high-quality leads generation. The goal is to increase our brand awareness, drive traffic to our social media accounts and websites, and generate high-potential leads and follows. If you're the wizard who can make this magic happen, I am looking forward to your bid. Ask for initial ...

    €49 (Avg Bid)
    €49 Μέση Προσφορά
    54 προσφορές

    I'm seeking a dynamic SEO expert to help enhance my website's visibility on Google. My primary aim is to thrive more visibly in search engine listings, which I believe can greatly improve our brand's footprint. Ideal skills and experience include: ...in deploying appropriate SEO strategies - Ability to effectively use keyword tools Additionally, I already have a list of identified keywords relevant to my site's content and service, which should be considered in moving forward with the optimization process. Therefore, your ability to strategically use these keywords is essential. In conclusion, I'm seeking an expert with a track record in driving successful SEO strategies that significantly increase search engine visibility, particularly on Google. Let�...

    €140 (Avg Bid)
    €140 Μέση Προσφορά
    57 προσφορές
    Unity 2D Game Collision-Based Mechanism 6 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    I'm currently working on a game, similar to "Brain It On", and require expert assistance in perfecting one feature. The specific mechanism I need developed involves breaking a 2D line shape into numerous pieces based on collision events. This should happen in real-time as the game unfolds. Skills Required: - Excellent grasp of Unity for 2D game development - Strong knowledge of physics-based collisions - Proficiency in implementing user interaction with game mechanics Please note, I am interested in immediate movement on this project. Quick turnaround time is valued. Game Link : I have done everything ( Drawing line, collisions, levels, everything ). Only thing I need is the ability to break the line into pieces

    €200 (Avg Bid)
    €200 Μέση Προσφορά
    8 προσφορές