Open Source Apps with 'Multiplayer' feature for Android

Luanti is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner, Minecraft, and the like.

Lichess is the most complete chess experience, with a simple interface that focuses on the game, a massive array of game related tools and a huge, worldwide community.

SuperTuxKart is a free 3D kart racing game; we want to make the game fun more than we want to make it realistic. You can play with up to 4 friends on one PC, racing against each other or just try to beat the computer (a network multiplayer feature is planned).

An open-source clone of the classic game Transport Tycoon Deluxe. It attempts to mimic the original game as closely as possible while extending it with new features.

The Battle for Wesnoth is a turn-based tactical strategy game with a high fantasy theme.

UnCiv offers a streamlined, gameplay-focused reimplementation of the hugely popular Civilization that's ad-free, open-source and built for speed. The game loads and plays very fast, offering a balanced design that lets players focus on...

Create complex supply chains, produce materials, and defend against enemy waves in this cross-platform sandbox tower defense game.

Pocket Code allows you to create your own games, animations, interactive music videos, and many kind of other apps, directly on your phone or tablet.

Sonic Robo Blast 2 (or SRB2 for short) is a fan made, free and open source Sonic-themed game using a heavily modified version of the Doom Legacy engine.

CaesarIA is an open source remake of Caesar III game released by Impressions Games in 1998, it aims to expand the possibilities of the classical city-building simulators and to add new features showing the city life. Now the game work with Windows, Linux, Mac, Haiku and Android.

EmptyEpsilon places you in the roles of a spaceship's bridge officers, like those seen in Star Trek. While you can play EmptyEpsilon alone or with friends, the best experience involves 6 players working together on each ship.

Frozen Bubble is a free software Puzzle Bobble style computer game which is available on several operating systems including Linux, Windows, Mac OS X, the Symbian Series 60, Windows Phone 7 and Android line of smartphones. There is also a single player Java applet version.

Original voxel game about emergent mechanics and exploration.

Powerful, customizable, cross-platform, opensource table sandbox game.

opsu! is an unofficial open-source client for the rhythm game osu!. It is written in Java using Slick2D and LWJGL, wrappers around the OpenGL and OpenAL libraries.

A simple game: swipe to delete numbers on a square space.

A collection of simple Lua and Rust games, and an API for playing them including an English dictionary (for word puzzles), websocket multiplayer, state sharing via URL, and auto saving with undo/redo. You can also upload your own Lua games and play in the public web version.

Play the ancient Chinese game of GO, also known as Weiqi and Baduk. If you're looking for a fun, challenging, and strategic game to play, then look no further than our app!.

Gobandroid is a virtual goban (GO-Board) on your mobile to study and play the ancient game of Go (weiqi in Chinese, igo in Japanese, baduk in Korean).

Start by collecting sticks, you get sticks from leaves, use the sticks to dig rocky dirt, then craft tools. In KetchupLand you can build a house or even a mansion, explore a deadly volcano biome, or swim across the sea. If you get hurt eat a tomato!

Source of Mana is a classic 2D MMORPG that blends the nostalgic charm of retro RPGs with modern gameplay enhancements. Set in a rich fantasy world, the game invites you to embark on epic adventures, discover new lands, battle fierce enemies, and forge friendships along the way.

Armagetron is a multiplayer game in 3d that attempts to emulate and expand on the lightcycle sequence from the movie Tron.

This is a browser-based multi-player role-playing game you and your friends can enjoy anytime on your own server! The main goal is to expand your empire and complete research activities in order to uncover the history of your species.

A custom Minecraft compatible game server written in C++. It's a fast, lightweight, and awesome replacement for Vanilla.

Freeminer is an open source sandbox game inspired by Minecraft.