Best Open Source Java Games for Windows

Java Games for Windows

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Browse free open source Java Games for Windows and projects below. Use the toggles on the left to filter open source Java Games for Windows by OS, license, language, programming language, and project status.

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1

MCA Selector

A tool to select chunks from Minecraft worlds for deletion or export

An external tool to export or delete selected chunks and regions from a world save of Minecraft Java Edition.

1 Review

Downloads: 1,247 This Week

Last Update: 2026-06-15
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2

Universal Pokemon Randomizer ZX

Public repository of source code for the Universal Pokemon Randomizer

Universal Pokemon Randomizer ZX is an open-source tool that allows players to modify and randomize various aspects of Pokémon games across multiple generations, creating unique and unpredictable gameplay experiences. It supports a wide range of ROMs and provides a user-friendly interface for customizing game elements such as Pokémon encounters, abilities, stats, movesets, and item distributions. The tool is designed to maintain game stability while introducing variability, ensuring that randomized versions remain playable and balanced. It also includes advanced options that allow users to control the level of randomness, from subtle changes to complete overhauls of game mechanics. By enabling customization, the project extends the replay value of classic Pokémon titles and encourages experimentation with different strategies. It is widely used by the community for challenge runs, content creation, and personalized gameplay experiences.

Downloads: 769 This Week

Last Update: 2026-03-18
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3

Sodium

A Minecraft mod designed to improve frame rates

Sodium is a powerful rendering engine and optimization mod for the Minecraft client which improves frame rates and reduces micro-stutter while fixing many graphical issues in Minecraft. A Minecraft mod designed to improve frame rates and reduce micro-stutter.

Downloads: 574 This Week

Last Update: 10 hours ago
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4

VulkanMod

Vulkan renderer mod for Minecraft

This is a fabric mod that introduces a brand new Vulkan-based voxel rendering engine to Minecraft Java in order to both replace the default OpenGL renderer and bring performance improvements.

Downloads: 300 This Week

Last Update: 2026-03-03
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5

Roblox anti-AFK

Never get AFK kicked from Roblox again!

Never get AFK-kicked again! With Roblox anti-AFK you can easily: grind, farm, chill and whatever you want! It's very easy to use. Just press "Start!", and good luck being AFK! You don't even need to have the Roblox window open. Roblox anti-AFK allows you to AFK in Roblox while you can still use your device. I hope you'll make lots of progress in your favourite simulators! Feel free to add suggestions! =====Version: 2.9.1===== Requires Java to be installed to run. You can download it here if you don't have it already: https://www.java.com/download/manual.jsp If you have trouble opening the program, the first post may help: https://sourceforge.net/p/roblox-anti-afk/tickets/7/?limit=25

51 Reviews

Downloads: 1,243 This Week

Last Update: 2024-07-13
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6

CatServer

A high performance and high compatibility 1.12.2/1.16.5/1.18.2 version

CatServer is an open-source hybrid Minecraft server implementation that combines support for both Forge mods and Bukkit-style plugins within the same server environment. Traditional Minecraft server software typically supports either mod loaders such as Forge or plugin systems like Bukkit and Spigot, but CatServer aims to bridge this gap by enabling both ecosystems to coexist. This hybrid approach allows administrators to run modded gameplay features while also using administrative plugins designed for plugin-based servers. The project modifies the server architecture to integrate Forge modding capabilities alongside plugin compatibility layers. As a result, server operators can build more complex environments that include both gameplay modifications and server management tools. CatServer is particularly useful for communities that want the flexibility of modded Minecraft while retaining access to established plugin-based server administration tools.

Downloads: 283 This Week

Last Update: 2026-03-13
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7

LOTRO Companion

A companion for your LOTRO activities

LOTRO Companion is a desktop application. It manages characters of the Lord of the Rings Online (LOTRO) MMORPG. It has 3 main goals: - track the status of one or several characters: current gear, deeds, quests, collections... - simulate gear/virtues, compute result stats and analyze stats contributions - lore database: quests, items, deeds, mounts, pets... Character data is imported from the game client running locally. See https://discord.gg/t2J4GDq See https://www.facebook.com/lotrocompanion/

3 Reviews

Downloads: 1,562 This Week

Last Update: 2026-06-13
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8

Hello Minecraft! Launcher

A Minecraft Launcher which is multi-functional, cross-platform

HMCL is a cross-platform Minecraft launcher that supports Mod Management, Game Customizing, ModLoader Installing (Forge, NeoForge, Fabric, Quilt, LiteLoader, and OptiFine), Modpack Creating, UI Customization, and more. HMCL has amazing cross-platform capabilities. It can not only run on different operating systems such as Windows, Linux, and macOS, but also supports multiple CPU architectures such as x86, ARM, MIPS, and LoongArch. You can easily play Minecraft on different platforms through HMCL.

Downloads: 203 This Week

Last Update: 2026-06-25
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9

TV-Browser - A free EPG

Ad free open source TV guide for more than 1000 channels.

TV-Browser is a java-based TV guide which can be easily extended with lots of plugins. It is designed to look like your paper TV guide.

53 Reviews

Downloads: 696 This Week

Last Update: 2025-03-02
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10

MCreator

Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons

MCreator is an open-source integrated development environment designed to simplify the process of creating Minecraft mods, add-ons, resource packs, and data packs. The software provides a visual programming environment where users can design mod features using graphical tools instead of writing code manually. Through wizards, block-based programming interfaces, and an integrated editor, MCreator generates the underlying Java or JSON code required for the mod automatically. This approach allows beginners and students to experiment with mod development without needing extensive programming experience. At the same time, advanced users can extend the tool through plugins or directly modify the generated code for more complex projects. MCreator is widely used in educational settings, modding communities, and programming workshops as a gateway into game development.

Downloads: 126 This Week

Last Update: 4 days ago
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11

Arclight

A Bukkit(1.19/1.20) server implementation in modding environment

A Bukkit server implementation on common mod loaders.

Downloads: 105 This Week

Last Update: 2025-07-16
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12

Baritone

Google maps for block game

A Minecraft pathfinder bot. Baritone is the pathfinding system used in Impact since 4.4. How to immediately get started: Type #goto 1000 500 in chat to go to x=1000 z=500. Type #mine diamond_ore to mine diamond ore. Type #stop to stop. For more, read the usage page and/or watch this tutorial playlist. For other versions of Minecraft or more complicated situations or for development, see Installation & setup. Also consider just installing Impact, which comes with Baritone and is easier to install than wrangling with version JSONs and zips. For 1.16.5, click here and see description. Once Baritone is installed, look here for instructions on how to use it. This project is an updated version of MineBot, the original version of the bot for Minecraft 1.8.9, rebuilt for 1.12.2 onwards. Baritone focuses on reliability and particularly performance (it's over 30x faster than MineBot at calculating paths).

Downloads: 102 This Week

Last Update: 2025-08-26
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13

Data Crow

Your collection, your way

Data Crow is an open source collection manager for movies & video (DivX, MP4, MKV, etc.), TV series, books (and eBooks), images, board games, comic books, games & software, and music (MP3 and other audio files). Besides these built-in modules (which you can customise to fit your needs) you can create entirely new ones. Want to catalogue your stamps, equipment, wine, or anything else? Data Crow makes it possible. Your collection is accessible the way you prefer: as a stand-alone desktop application, in server-client mode for shared access across multiple users or devices, via the web client in any browser, or on the go with the Data Crow Reader App. The app synchronises with your Data Crow installation and works fully offline. Private. Offline. Completely personal. The Data Crow way.

57 Reviews

Downloads: 432 This Week

Last Update: 2026-06-23
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14

FreeCol

Colonize the New World.

FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. The objective of the game is to create an independent nation. You start with only a few colonists defying the stormy seas in their search for new land. Will you guide them on the Colonization of a New World? The last stable version release can be found here: https://sourceforge.net/projects/freecol/files/latest/download The latest test pre-release of the next version can be found here: https://github.com/FreeCol/freecol/releases If you want to contribute to Freecol please visit our welcome information thread to see how here: https://sourceforge.net/p/freecol/discussion/719661/thread/2d0063a3bc/

68 Reviews

Downloads: 350 This Week

Last Update: 7 days ago
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15

NeoForge

Neo Modding API for Minecraft: Java Edition, based on Forge

NeoForge is an open-source modding API and mod loader designed for Minecraft: Java Edition that enables developers to create and run game modifications within a structured development framework. The project was created as a community-driven continuation of the Minecraft Forge ecosystem and aims to provide a modernized, actively maintained platform for mod development. NeoForge includes tools, APIs, and build systems that allow developers to modify game behavior, add new gameplay mechanics, and integrate custom content into Minecraft worlds. The framework is designed to simplify the development process by offering standardized interfaces, development kits, and compatibility layers that help mod creators build complex modifications without rewriting core game code. By supporting mod development tools such as Gradle plugins and mod development kits, NeoForge allows programmers to efficiently build, compile, and distribute mods for multiple versions of Minecraft.

Downloads: 68 This Week

Last Update: 2026-03-15
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16

TripleA Maps

A collection of all maps and games made for the TripleA game engine

http://www.triplea-game.org/

61 Reviews

Downloads: 271 This Week

Last Update: 2017-11-30
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17

Robocode

Robocode is a programming tank game for Java

Robocode is a programming game, where the goal is to develop a robot battle tank to battle against other tanks with Java. The robot battles are running in real-time and on-screen. The motto of Robocode is: Build the best, destroy the rest!

29 Reviews

Downloads: 256 This Week

Last Update: 2026-06-06
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18

Mohist 1.20.1

Minecraft Forge Hybrid server implementing the Spigot

Tenet is an open-source experimental project related to Minecraft server or modding infrastructure that explores alternative approaches to building scalable and modular gameplay systems. The project aims to provide developers with a framework for experimenting with advanced server architecture and performance-oriented design. By focusing on modular components and extensible design patterns, Tenet allows developers to create systems that can integrate with other Minecraft tools and frameworks. The architecture encourages experimentation with new networking, gameplay logic, or server extension mechanisms. Projects like Tenet often serve as research platforms where developers test new ideas about game server design, concurrency, and plugin systems. The codebase provides a foundation for building new tools or prototypes related to Minecraft infrastructure.

Downloads: 53 This Week

Last Update: 2026-03-13
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19

Sudoku for Java - HoDoKu

Sudoku generator/solver/analyzer written in Java (English and German). Lots of human style techniques (singles, subsets, LCs, fish, wings, uniqueness, coloring, chains, ALS), powerful analyzer (manage multiple solutions for one sudoku). Includes Learning and training modes and a booklet printer.

11 Reviews

Downloads: 223 This Week

Last Update: 2013-09-06
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20

GoMule

Welcome to GoMule! This is a muling application for the computer game "Diablo 2" which allows items to be stored and transferred between Single Player characters outside of the game.

5 Reviews

Downloads: 268 This Week

Last Update: 2026-02-28
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21

Typing Guru

SUPORTS: Hindi, English, Nepali, Tamil, Punjabi, Urdu,Bengali,Marathi.

Web Version: https://typing-guru.com/ This software is developed on the view of beginners how they can increase typing speed. There is a step-by-step process to increase typing speed. This is available for Linux and windows both. Supports: Hindi Typing, English Typing, Nepali Typing, Tamil Typing, Punjabi Typing, Urdu Typing, Bengali Typing, Marathi Typing, Telugu Typing. More language will be added if you request in reviews. Tags: Typing Guru, typing tutor 6, Marathi typing software, Hindi typing tutor, ubuntu Hindi font, Hindi typing test software, Unicode Hindi keyboard, Gujarati typing tutor software, English typing master, typing tutor 6 in Hindi, typing master install to ubuntu, typing tutor 6, typing klavaro, typing tutor 6 downloads, typing tutor, English typing master, typing, tutor offline, klavaro touch typing tutor, keyboard, digitação, Typeshala, Typeshala, Abdhesh Nayak,

14 Reviews

Downloads: 174 This Week

Last Update: 2025-03-14
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22

GeyserMC

A bridge/proxy allowing you to connect to Minecraft

Geyser is an open-source proxy and protocol translation tool that enables cross-platform multiplayer between Minecraft: Java Edition servers and Minecraft: Bedrock Edition clients. The project works by translating network packets between the two different game protocols so that players using Bedrock Edition devices such as consoles, mobile phones, or Windows editions can connect to servers originally designed for Java Edition. By bridging the differences between the two platforms, Geyser allows server communities to unify players who would otherwise be separated by incompatible game editions. The software typically runs as a plugin, proxy, or standalone bridge and integrates with popular Java server platforms such as Spigot, Paper, or Velocity.

Downloads: 35 This Week

Last Update: 2 days ago
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23

libGDX

Desktop/Android/HTML5/iOS Java game development framework

libGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS. libGDX provides a well-tried and robust environment for rapid prototyping and fast iterations. libGDX does not force a specific design or coding style on you; it rather gives you the freedom to create a game the way you prefer. Publish your games on Windows, macOS, Linux (including the RPi!), Android, iOS, and HTML5, all with the same code base. libGDX comes with batteries included. Write 2D or 3D games and let libGDX worry about low-level details. Heavy emphasis is put on avoiding garbage collection for ART/JavaScript by careful API design and the use of custom collections. libGDX is a well proven and reliable framework with a sound base and documentation. Furthermore, there are plenty of games built on top of libGDX, many of which are open source.

Downloads: 35 This Week

Last Update: 2026-06-05
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24

Slipstream Mod Manager

A mod manager for the game FasterThanLight.

Slipstream is a mod manager for the game FasterThanLight, making it easy to install multiple mods at the same time and, later, revert to vanilla gameplay. It is the successor to Grognak's Mod Manager (GMM).

Downloads: 874 This Week

Last Update: 2018-01-07
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25

WorldEdit

Minecraft map editor and mod

WorldEdit is a powerful open-source Minecraft map editing toolkit that allows players, builders, and server administrators to quickly modify large areas of a Minecraft world directly from within the game. Instead of placing or removing blocks individually, WorldEdit provides commands and tools that enable users to select regions of the world and apply transformations to thousands or even millions of blocks at once. This capability makes it extremely useful for constructing large builds, terraforming terrain, repairing damage, or managing multiplayer server worlds efficiently. The tool includes a variety of editing methods such as brushes, shape generation commands, and clipboard operations that allow copying, pasting, and rotating entire structures. WorldEdit can run in both single-player environments and multiplayer servers and is compatible with several modding platforms and server frameworks used in Minecraft Java Edition.

Downloads: 28 This Week

Last Update: 5 days ago
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