Open Source Java Games - Page 3
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Java Games
View related business solutionsBrowse free open source Java Games and projects below. Use the toggles on the left to filter open source Java Games by OS, license, language, programming language, and project status.
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minecraft-world-downloader
Download Minecraft worlds, extend server's render distance. 1.12.2
A Minecraft world downloader that works as a proxy server between the client and the server to read & save chunk data. Download multiplayer worlds by connecting to them and walking around. Chunks can be sent back to the client to extend the render distance. -
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An Open Source model rocket simulator.
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BlueMap
A Minecraft mapping tool that creates 3D models of your Minecraft
BlueMap is a program that reads your Minecraft world files and generates not only a map, but also 3D models of the whole surface. With the web app you then can look at those in your browser and basically view the world as if you were ingame! Or just look at it from far away to get an overview. BlueMap comes as a Spigot/Paper or Sponge Plugin, as a Fabric or Forge-Mod and you can also use BlueMap without any Server from the Command-Line as a standalone tool. If installed as a Plugin/Mod, BlueMap renders asynchronously to your MinecraftServer-Thread. This means at no time it will block your server thread directly. So as long as your CPU is not fully utilized, your server should not be slowed down while BlueMap is rendering. -
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Skript
Skript is a Bukkit plugin which allows server admins
Skript is (surprise, surprise) a scripting plugin for the Bukkit platform. It is easy to use for simple tasks, but you can also create really complex things with it. The syntax of Skript is close to English, but it is still not magic. While you might succeed with experimentation for simple tasks, for anything more complex you will need some guidance. You will find all supported features of the plugin here, along with some useful examples. We don't have tutorials yet, but you can find good ones using whatever search engine you prefer. Skript requires Spigot to work. You heard it right, CraftBukkit does not work. Paper, which is a fork of Spigot, is recommended; it is required for some parts of Skript to be available. Skript supports only the latest patch versions of Minecraft 1.9+. For example, this means that 1.16.5 is supported, but 1.16.4 is not. Testing with all old patch versions is not feasible for us. -
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FTLEditor
A tool to edit profile and saved game files for FasterThanLight.
A 3rd-party tool to edit user files for the game FasterThanLight. With this, you can unlock any or all ships and achievements in your user profile, or tweak most aspects of saved games: crew, systems, weapons, fires, breaches, etc. -
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Crossfire RPG game
Cooperative multiplayer graphical RPG and adventure game
Crossfire is a free, open-source, cooperative multi-player RPG and adventure game. Since its initial release, Crossfire has grown to encompass over 150 monsters, 3000 areas to explore, an elaborate magic system, 14 races, 16 character classes, and many powerful artifacts scattered far and wide. Set in a fantastical medieval world, it blends the style of Gauntlet, NetHack, Moria, and Angband. -
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jwargames
Collection of Simple Java War Games
Collection of SimpleJava War Games Currently at the beta stage: Flyer 0.2.6 - top view airplane shooter Fighter 0.1.3- side view airplane shooter and bomber Marine 0.3.5 - side view beat them all Tank 0.2.4- top view tank shooter Gunner 0.1.2 - perspective view gun shooter Warship 0.1.3 - top view sail ship shooter Civil war 1861 2.1.0 - strategic game Enigma 0.0.4 - Decoding game with Enigma Machine Fighter3D 0.0.2 - 3D airplane shooter Star Battles 0.0.2 - 3D spaceship shooter -
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Biogenesis is an artificial life program that simulates the processes involved in the evolution of organisms. It shows colored segment based organisms that mutate and evolve in a 2D environment. Biogenesis is based on Primordial Life.
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Iris
A modern shaders mod for Minecraft compatible with existing OptiFine
Iris was created to fill a void that I saw in the Minecraft customization and graphical enhancement community: the lack of an open-source shaders mod that would let me load my favorite shader packs on modern versions of the game, while retaining performance and compatibility with modpacks. OptiFine, the current dominant mod for loading shader packs, has restrictive licensing that firmly stands in the way of any sort of tinkering, and is fairly notorious for having compatibility issues with the mods that I like. It's also mutually incompatible with Sodium, the best rendering optimization mod in existence by a large margin. ShadersMod was never updated past 1.12, and it lacks support for many of the many modern popular shaderpacks. So I created Iris, to try and solve these issues, and also address many other longstanding issues with shader packs. I first and foremost develop Iris to meet my own needs of a performance-oriented shaders mod with good compatibility. -
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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. -
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Botania
A tech mod for Minecraft themed around the magic of nature
Botania is a Minecraft tech mod themed around natural magic. It's inspired by other magic mods, such as Thaumcraft or Blood Magic. With an original aim- and timing-based power system, Botania has a very different feel from your typical magic or tech mod. Manipulating Mana and watching it flow in real time adds a new light to your base of operations. Botania works within the Minecraft world itself; no GUIs are used to interact with any of its features. It's carefully designed to ensure that nearly everything is fully automatable using vanilla and itself. After some thought, of course. The Lexica Botania is the compendium of nearly all knowledge about this mod. Easily craftable in-game using a book and a sapling, it gives you almost all the information you'll ever need to know about Botania. -
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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. Local server supports a special test mode for testing combos and other game situations with pre-defined conditions. There are public servers where you can play XMage against other players. You can also host your own server to play against the AI and/or your friends. Supports special formats like Commander (up to 10 players), Oathbreaker, Cube, Tiny Leaders, Super Standard, Historic Standard and more. -
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JMRI Model Railroad Interface
Java applications to control a model railroad layout.
Java interfaces and sample implementations for controlling a model railroad layout from a personal computer. JMRI is intended as a jumping-off point for hobbyists to build their own layout controls. Includes the DecoderPro and PanelPro applications. -
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Java Game Service
utility collection for 2D game development in Java; sound-player
Utility collection of structures and algorithms which can aid in the development of Java based games with special focus on hexagon 2D display and sound-playing. Status is Alpha but we have a running example game in development. -
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PCGen :: An RPG Character Generator
RPG character generator for RPG d20 systems.
PCGen is a free open source RPG character generator (d20 systems). All datafiles are ASCII so they can be modified by users for their own campaigns. Please join us at http://groups.yahoo.com/group/pcgen/. Support email: help@pcgen.org -
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Mohist
Minecraft Forge Hybrid server implementing the Spigot/Bukkit API
MohistMC is dedicated to pushing boundaries by accomplishing the impossible through the creation of unique hybrid Minecraft software. Additionally, we strive to maintain and enhance select mods and plugins, aiming to provide players with an exceptional gaming experience. -
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The Campaign Simulator is an attempt to statistically model and predict the outcome of an American presidential election; several users assume the roles of competitive candidates and inflict the repercussions of certain decisions on a GSS based dataset.
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Jin is a Java client for various chess servers. It currently supports the Internet Chess Club (chessclub.com) and the Free Internet Chess Server (freechess.org) but is designed to be able to support any chess server.
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Applied Energistics 2
A Minecraft Mod about Matter and Energy
Applied Energistics 2 (AE2) is a comprehensive mod for Minecraft that introduces a unique approach to in-game inventory management. Its theme is centered around the concept of converting matter into energy and vice versa, to store and transport your items and fluids instantaneously. AE2 revolutionizes storage in Minecraft. The mod adds a network-based digital storage system, where items and blocks are stored as energy in a digital form within a network of connected devices. This allows for compact storage solutions and easy access to your items. Another significant feature of AE2 is its automatic crafting capabilities. Players can set up patterns and recipes which the system can automatically craft on demand. This greatly streamlines bulk and complex crafting processes, saving time and effort. AE2 adds a whole new level of strategy to your Minecraft builds with its networking and channel system. -
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FXGL
Java/JavaFX/Kotlin Game Library (Engine)
No installation or setup required. "Out of the box": Java 8-17, Win/Mac/Linux/Android 8+/iOS 11.0+/Web. Simple and clean API, higher level than other engines. Superset of JavaFX, no need to learn new UI API. Real-world game development techniques, entity-component, interpolated animations, particles, and many more. Games are easily packaged into a single executable .jar or native images. Any 2D game (side-scroller/platformer/arcade/RPG). Any business application with complex UI controls/animations. Hobby/academic/commercial projects. Teaching/learning/improving game development skills. -
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GrimAC
Fully async, multithreaded, predictive, open source, 3.01 reach
GrimAC is an open-source anticheat system designed to detect and prevent cheating on Minecraft multiplayer servers through predictive simulation and advanced movement analysis. The project uses a simulation-based detection engine that recreates player movement and physics in order to identify discrepancies between legitimate gameplay and modified client behavior. By analyzing how players move, interact with the world, and send network packets to the server, Grim can detect a variety of cheats such as reach hacks, speed hacks, and anti-knockback modifications. The software is designed to operate asynchronously and with multithreaded processing, allowing servers to maintain high performance even when monitoring large numbers of players simultaneously. Grim supports a wide range of Minecraft versions and can integrate with server platforms used in competitive or large multiplayer environments. -
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Le chansonnier
Your electronic guitar songbook
"Le chansonnier" is a program allowing to create, manage, display and publish a guitar songbook. It is able to produce nice PDF documents containing song and chords along with chord diagrams. -
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VASSAL is a game engine for creating electronic versions of traditional board and card games. It provides support for game piece rendering and interaction, and supports play by email or over a live connection.
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SpongeForge
A Forge mod that implements SpongeAPI
A Forge implementation of the Sponge API. SpongeForge uses Gradle as its build system. The repo includes the Gradle wrapper that will automatically download the correct Gradle version. Local installations of Gradle may work but are untested. To execute the Gradle wrapper, run the ./gradlew script on Unix systems or only gradlew on Windows systems. In order to build SpongeForge you simply need to run the gradlew command. On Windows systems you should run gradlew instead of ./gradlew to invoke the Gradle wrapper. SpongeForge is the implementation of the Sponge API on the Minecraft Forge platform. Recommended for running plugins together with Forge mods. The purpose of the Sponge project is to create a plugin development framework for Minecraft: Java Edition. Sponge is being created by a global community, and its open-source nature means anyone can participate. -
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Xonotic
Superproject containing build scripts and tools to download assets
Xonotic is a free, open-source arena-style first-person shooter video game that emphasizes fast-paced movement, skill-based combat, and a diverse arsenal, with gameplay reminiscent of classic shooters like Quake and Unreal Tournament. Born as a community fork of the Nexuiz project to preserve open development principles, Xonotic runs on an enhanced version of the DarkPlaces engine and supports Windows, macOS, and Linux platforms with no installation required beyond extracting the game files. Players can enjoy a wide variety of multiplayer game modes—from traditional deathmatch and team captures to experimental variations like Nexball and Freeze Tag—each designed to exploit high mobility and deep map knowledge. The game includes dozens of official and community-created maps, robust server browsing, customizable HUD and controls, and even an integrated statistics system called XonStat for tracking performance.
