Showing 1158 open source projects for "online"

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  • 1
    OpenKore

    OpenKore

    A free/open source client and automation tool for Ragnarok Online

    OpenKore is a free and open source automation tool and custom client for the online game Ragnarok Online. It provides a flexible scripting system that allows users to automate gameplay, including navigation, combat, trading, and interaction with other players. The project supports plugins and modular extensions, enabling customization for different servers and play styles. OpenKore is cross-platform, running on Windows, Linux, and macOS, and is written primarily in Perl. ...
    Downloads: 28 This Week
    Last Update:
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  • 2
    YimMenu

    YimMenu

    YimMenu, a GTA V menu protecting against a wide ranges

    YimMenu is an open-source modification menu for Grand Theft Auto V designed to enhance gameplay while providing protection against common crashes and disruptions encountered in online sessions. It operates as an injected module that interacts directly with the game engine, allowing users to access a wide range of in-game controls and customization options through an overlay interface. One of its primary goals is stability, offering safeguards against malicious or unstable interactions that can occur in multiplayer environments. ...
    Downloads: 141 This Week
    Last Update:
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  • 3
    Pokemon Showdown
    Pokémon Showdown is a Pokémon battle simulator. Play Pokémon battles online! Play with randomly generated teams, or build your own! Fully animated!
    Downloads: 38 This Week
    Last Update:
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  • 4
    ClassicUO

    ClassicUO

    An open source implementation of the Ultima Online Classic Client

    ClassicUO is an open-source, modern client for Ultima Online, a beloved MMORPG originally released in the late 1990s. Designed as a drop-in replacement for outdated clients, ClassicUO supports high performance, modding, and quality-of-life improvements while preserving the game's core look and mechanics. It’s built using .NET Core and runs cross-platform, offering smoother input, faster rendering, and extensibility for private servers.
    Downloads: 4 This Week
    Last Update:
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  • 5
    Switch theme injector

    Switch theme injector

    Create custom themes for the Nintendo Switch

    ...Unfortunately, SZS files from the switch os contain copyrighted data and can't be shared online that's why the nxtheme format has been developed, it contains only differential info and can be freely shared. Unless you're dealing with making your own patches and custom layouts you should only use nxtheme files.
    Downloads: 8 This Week
    Last Update:
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  • 6
    OpenRA

    OpenRA

    Real Time Strategy game engine supporting early Westwood classics

    ...This means that OpenRA is not restricted by the technical limitations of the original closed-source games: it includes native support for modern operating systems and screen resolutions (including Windows 10, Mac OS X, and most Linux distros) without relying on emulation or binary hacks, and features integrated online multiplayer.
    Downloads: 21 This Week
    Last Update:
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  • 7
    Multi Theft Auto: San Andreas

    Multi Theft Auto: San Andreas

    Multi Theft Auto is a game engine

    Multi Theft Auto (MTA) is a software project that adds network play functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found. It is a unique modification that incorporates an extendable network play element into a proprietary commercial single-player PC game. Multi Theft Auto is based on code injection and hooking techniques whereby the game is manipulated without altering any original files supplied with the game. The software...
    Downloads: 165 This Week
    Last Update:
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  • 8
    Unciv

    Unciv

    Open-source Android/Desktop remake of Civ V

    Unciv is an open-source reimplementation of the game Civilization V in Java using LibGDX. It focuses on replicating the core gameplay mechanics in a lightweight, mobile- and desktop-friendly format, supporting both single-player and multiplayer modes. Unciv uses a minimalist art style and text-based UI to deliver a fast, turn-based strategy experience.
    Downloads: 25 This Week
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  • 9
    NitroType Cheat v2

    NitroType Cheat v2

    An easy-to-use, working NitroType hack for typing at insane speeds!

    NitroType Cheat v2 is a browser-based or script-driven tool designed to automate typing performance in the Nitro Type online racing game by simulating extremely high typing speeds and accuracy. It works by intercepting or generating input events that mimic rapid and precise keystrokes, allowing users to achieve unrealistically high words-per-minute scores. The project is built for ease of use, often requiring minimal setup or configuration to begin automating gameplay.
    Downloads: 58 This Week
    Last Update:
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  • 10
    World of ClaudeCraft

    World of ClaudeCraft

    Quest, group up, and raid a hand-built world, free in your browser

    World of ClaudeCraft is a free, open-source classic-era MMO that runs directly in the browser. It lets players quest, group up, raid, trade, duel, and explore a hand-built fantasy world online. The same game core supports an offline browser world, an authoritative multiplayer server, and a headless reinforcement learning environment. The project includes classes, talents, zones, quests, dungeons, raids, PvP ladders, and real multiplayer mechanics. Much of the world is generated at runtime, including towns, creatures, spell icons, sound, weather, and shadows. ...
    Downloads: 13 This Week
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  • 11
    Warzone 2100

    Warzone 2100

    Free and open source real-time strategy game

    ...Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. Play versus your friends on a local network, or try your hand at online multiplayer with an integrated lobby. Play versus AI bots in local skirmishes (or as added teammates/enemies in multiplayer), and practice your skills with endless replayability. Over 400 different technologies yield an extensive tech tree with many paths to choose from. Customize your units with a flexible design system that allows for a wide variety of possible units and tactics. ...
    Downloads: 18 This Week
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  • 12
    Fish Folk: Jumpy

    Fish Folk: Jumpy

    Tactical 2D shooter in fishy pixels style. Made with Rust-lang

    Fish Folk: Jumpy is a tactical 2D shooter, played by up to 4 players online or on a shared screen. Aim either left or right; the rest is up to clever movement and positioning in this fish-on-fish brawler. Jumpy runs in the browser. You can play a web demo to try out the game, without needing to install anything on your computer. We recommend using the Chrome browser or other derivatives for best performance, or if you have issues with other browsers.
    Downloads: 0 This Week
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  • 13
    Dungeon Crawl: Stone Soup

    Dungeon Crawl: Stone Soup

    A game of dungeon exploration, combat and magic

    An open source roguelike adventure through dungeons filled with dangerous monsters in a quest to find the mystifyingly fabulous Orb of Zot. Crawl may seem easier than many other roguelikes at first glance, but dig a little deeper and you'll find it's just as challenging as some of the most difficult variations out there and a good deal harder than the rest. A strong set of design philosophies makes it much friendlier (and generally fairer) to the player - deaths are a learning experience...
    Downloads: 28 This Week
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  • 14
    gonet

    gonet

    A Game Server Skeleton in golang

    gonet is an archived Go game server skeleton that demonstrates a distributed backend architecture for online games. It separates responsibilities across game servers, a hub server, and a stats server. Game servers handle direct player connections and gameplay logic while communicating with shared backend services. The hub server maintains global information and forwards messages between game server nodes. The stats server records player behavior and analytical data separately from real-time gameplay processing. ...
    Downloads: 0 This Week
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  • 15
    Gradient Bang

    Gradient Bang

    Gradient Bang is an online multiplayer universe

    Gradient Bang is an experimental open-source project developed within the Pipecat ecosystem that reimagines AI interaction as a persistent, multiplayer simulation where users and large language models coexist inside a shared virtual environment. Rather than functioning as a traditional application or API, it is conceptualized as an “online multiplayer universe” in which participants can explore, trade, battle, and collaborate while interacting with AI agents as active entities within the system. The project serves both as a prototype and a conceptual playground for testing how conversational AI systems behave when embedded into dynamic, game-like environments rather than static chat interfaces. ...
    Downloads: 0 This Week
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  • 16
    AzerothCore

    AzerothCore

    Complete Open Source and Modular solution for MMO

    ...It emphasizes stability and “blizzlike” accuracy, meaning it strives to replicate the original mechanics of the official game as closely as possible. The framework is also used as an educational resource for understanding how large-scale online game servers are structured and maintained. It includes tools for managing server configuration, content scripting, and database operations.
    Downloads: 7 This Week
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  • 17
    Basic Computer Games

    Basic Computer Games

    An updated version of the classic "Basic Computer Games" book

    Basic Computer Games is a modern revitalization of the classic “Basic Computer Games” book’s collection of games, ported and expanded into various modern, memory-safe and scripting languages. It includes illustrative code examples of many classic games (e.g. Blackjack, Bowling) in multiple languages, with the goal of making the historical games accessible and educational in safe modern environments. Definitely use the most recent versions and features of the target language, but also try to...
    Downloads: 7 This Week
    Last Update:
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  • 18
    XMage

    XMage

    Magic Another Game Engine

    XMage allows you to play Magic against one or more online players or computer opponents. It includes full rules enforcement for over 20 000 unique cards and more than 50.000 reprints from different editions. You can also find custom sets like Star Wars. All regular sets have nearly all implemented cards. It supports single matches and tournaments with dozens game modes like duel, multiplayer, standard, modern, commander, pauper, oathbreaker, historic, freeform and much more.
    Downloads: 4 This Week
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  • 19
    Ancient Beast

    Ancient Beast

    The Turn Based Strategy Game/eSport. Master your beasts

    Ancient Beast is a turn-based strategy indie game project played online against other people featuring a wide variety of creatures to acquire, putting them to use in order to defeat your opponents. This project was carefully designed to be easy to learn, fun to play and hard to master. We hope you'll enjoy it. The game takes place in a dystopian future, where people have excelled in power thanks to the use of technology, specifically advanced 3d printers.
    Downloads: 1 This Week
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  • 20
    Mudlet

    Mudlet

    Cross-platform, open source, and super fast MUD client with scripting

    ...Mudlet includes customization for various MUD games and can play many more MUDs than those listed. We’re always ready to add more games to the list. Mudlet offers excellent help for players in the 400-600 people online Discord channel. Similarly, its scripting design is carefully thought out to be simple, and intuitive, yet powerful to use. This combination makes Mudlet a lot easier to get started with.
    Downloads: 2 This Week
    Last Update:
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  • 21
    Overload

    Overload

    3D Game engine with editor

    A game engine made for Windows, without flourishes. Online documentation and commented sources. Develop complete games with our lua scripting system! Customize Overload editor as you like. Increase your productivity by changing the editor layout. Never feel lost by reading Overload wiki, full of tutorials and a highly documented scripting API! You don't need to watch hours of tutorials on YouTube, Overload is intuitive.
    Downloads: 0 This Week
    Last Update:
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  • 22
    preserve-cd

    preserve-cd

    Game Preservation Project

    ...One disc collects 64 high-quality DOS classics, many of which are now hard to find or are often bundled with malware when downloaded from random sites. Another disc compiles around a hundred simple, highly replayable Windows and Flash mini-games that are easy to pick up and play without online services or microtransactions. Each game is documented with screenshots and written descriptions including publisher, developer, genre, and a short summary to preserve context and nostalgia, not just the files. The repository also lists multiple mirror links and MD5 checksums so people can verify integrity and avoid corrupted or tampered images.
    Downloads: 0 This Week
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  • 23
    Evennia

    Evennia

    Python MUD/MUX/MUSH/MU* development system

    Evennia is a mature, open-source framework written in Python — specifically designed to build text-based, online multiplayer games such as MUDs, MUCKs, MUSHes, MUXes, and other “MU-style” virtual worlds. Rather than prescribing a rigid game structure, Evennia gives you a bare-bones but powerful foundation: default systems handle networking, database/storage, server management, user accounts, characters, rooms, items, chat channels, and basic commands — but you define the gameplay rules, content, and game logic yourself in pure Python modules. ...
    Downloads: 0 This Week
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  • 24
    Scorched Earth Online War

    Scorched Earth Online War

    Online War system for IL-2 Sturmovik and Iron Front in ArmA 2

    SEOW is a dynamic multiplayer campaign system for running on-line wars using the IL-2 combat simulator together with Iron Front in ArmA 2. SEOW is a free add-on for IL-2 and Iron Front in ArmA 2 released under the GNU Public Licence. For an install of SEOW, you need the MP, the DB and the DCS, 3 downloads in total. Check out the Files tab above for direct downloads.
    Downloads: 1 This Week
    Last Update:
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  • 25
    KeeperRL

    KeeperRL

    A downloadable game for Windows, macOS, and Linux

    KeeperRL is an ambitious dungeon builder with roguelike elements. Take the role of an evil wizard and seek the ultimate knowledge of destruction. Explore the world, murder innocent villagers and burn their homes. Build your dungeon, lay traps and prepare for an assault of angry heroes. When you control your minions the game becomes a classic roguelike, with turn-based and very tactical combat. You can also play as an adventurer and assault dungeons made by you or other players. You will dig...
    Downloads: 1 This Week
    Last Update:
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