Cytopia Note - games browser alt 2048
Game ServersSelf-hostable browser version of the 2048 sliding puzzle
Replaces Mobile puzzle games
Best Offline-First Game Servers for self-hosting
The 28 best Offline-First game servers you can self-host, ranked by community traction.
Cataclysm: Dark Days Ahead
Game ServersOpen-source turn-based survival roguelike
Replaces NetHack
Prism Launcher
Game ServersOpen-source Minecraft launcher for managing instances and modpacks
Replaces Official Minecraft Launcher, CurseForge app
Endless Sky
Game ServersFree space exploration and trading game
Replaces Escape Velocity
shapez.io
Game ServersOpen-source factory-building puzzle game
Replaces Factorio
Ren'Py
Game ServersVisual novel engine for creating story-based games
Replaces TyranoBuilder
OpenXRay
Game ServersOpen-source engine for the S.T.A.L.K.E.R. games
Replaces original X-Ray Engine
Minecraft Overviewer
Game ServersGenerates browsable map tiles from Minecraft worlds
Replaces Dynmap
SuperTux
Game ServersClassic-style 2D side-scrolling platform game
Replaces Super Mario Bros
Twine
Game ServersOpen-source tool for telling interactive nonlinear stories
Replaces Inklewriter
BrowserQuest Note - mozilla-bq alt Hextris
Game ServersSelf-hosted block-stacking puzzle game in the browser
Replaces Tetris
Cytopia
Game ServersFree city-building simulation game
Replaces SimCity
Pioneer
Game ServersOpen-source space adventure and trading simulator
Replaces Elite, Frontier
Inform 7
Game ServersNatural-language design system for interactive fiction
Replaces TADS
UnknownHorizons Note - settlement game
Game ServersOpen-source 2D real-time strategy and economy simulation
Replaces Anno series
Colobot Note - browser game alt Hextris-no
Game ServersSelf-hostable open-source educational programming game
Replaces Commercial programming games
EasyRPG Player
Game ServersOpen-source interpreter for RPG Maker 2000 and 2003 games
Replaces RPG Maker RTP runtime
AzuraCast Games
Game ServersBrowser idle and incremental game host
Replaces Cookie Clicker, Universal Paperclips
Naev
Game ServersOpen-source 2D space trading and combat game
Replaces Escape Velocity
Adventure Game Studio
Game ServersEngine and editor for creating point-and-click adventure games
Replaces Visionaire Studio
Lichess Board Note - chessground alt pychess
Game ServersSelf-hostable chess server playing multiple chess variants
Replaces Chess.com
FlightGear
Game ServersOpen-source flight simulator with multiplayer
Replaces Microsoft Flight Simulator, X-Plane
FreeCol
Game ServersOpen-source turn-based colonization strategy game
Replaces Sid Meier's Colonization
Pioneer Note - space game alt Naev-server-no
Game ServersOpen-source first-person space combat and trading game
Replaces Elite
LinCity-NG
Game ServersOpen-source city building and management game
Replaces SimCity
OpenDungeons
Game ServersOpen-source dungeon-keeper-style real-time strategy game
Replaces Dungeon Keeper
Curse of War
Game ServersFast-paced real-time strategy game for the Linux terminal
Replaces commercial RTS games
UFO: Alien Invasion
Game ServersOpen-source strategy game of defending Earth from aliens
Replaces XCOM
No apps match these filters.
Every option here is open-source and self-hostable, tagged Offline-First within the game servers category. Compare them on the individual app pages for setup difficulty and resource requirements.