Top freewith server-based network multiplayer with code under GNU General Public License v3.0 (GPL) (76 results)
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Hub OS is an online Mega Man Battle Network fan project that takes place on interconnected servers, or Hubs.
1 – 100
A pixelized top-down mega sandbox. Play or create solo / cooperative survival, team battle, and more !
1 – 10
Survival
The Questions are Ridiculous; the Answers are Serious.
1 – 8
Puzzle
Play in browser
A multiplayer voxel RPG written in Rust inspired by games like Cube World, Zelda, Dwarf Fortress and Minecraft.
Adventure
Stendhal is a fun friendly and free multiplayer online adventure game with an old school feel.
1 – 100
Role Playing
!Play Anywhere! An Online Social RPG handcrafted with ❤ for Web, PC and Android
Role Playing
Play in browser
Compete against teams of 2 to collect hidden crystals using special items and abilities!
2 – 4
Platformer
Ubercube is a first person shooter multi-player game set in a completely destroyable voxel world.
Shooter
Challenge your friend to an intense duel, or gather two clans to fight a spectacular war. Forever free and open-source.
1 – 20
Shooter
Play in browser
Classic Tic Tac Toe with Online Multiplayer and custom Board Sizes, Winning Conditions, etc...
2
Strategy
Play in browser
Every battle, trade, and collectible isn't just a play, it's piece of nostalgia. One click, one wallet, endless rewards.
1 – 2
Card Game
Play in browser
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