A free fantasy MUD online since 1996, with 28 classes, clans and hundreds of areas to map.
Tag
Co-op browser games
Players work together more than against each other.
49 games
Text-driven fantasy world of ten thousand rooms where you pick a race and path and hunt with others.
Cyberpunk text MMO with AFK progression, co-op boss fights and progress synced across devices.
Co-op zombie survival where you join one of several camps and help its survivors hold the wall.
Text-based idle RPG of skilling, slayer tasks, world bosses, guilds and weekly PvP ladders.
Text-based idle skilling game in open alpha, with shared chat and player 'empires' instead of PvP.
Server-run turn-based idle RPG with PvP ratings, co-op nightmare bosses and seasonal realms.
Browser grinder RPG where four Great Houses fight over a shared 10x10 battlefield map.
RPGFree with purchases
Always-online idle MMORPG with three classes, per-skill talent trees, pets and three-player parties.
Multiplayer idle RPG where 17 skills level up in a shared town, market and clan hall.
An old-school text-and-icon fantasy MMO with a thousand levels of realms to grind through.
Cast a line, come back later and see what bit in a fishing idler running since 2008.
A Lineage 2-inspired fantasy MMORPG with raid bosses, clan fortresses and offline farming.
Server-side crafting idle game where artisans trade, form Conclaves and raid world bosses.
Text idle PBBG with role-based combat, gathering professions, guild bosses and an auction house.
Fantasy grind RPG with guild raids, area bosses and auto-battle that keeps going offline.
Timer-driven crime RPG where you steal cars, run heists and war with rival gangs.
1950s text mafia RPG with crimes, gangs, bounties, car racing and a live player market.
A multiplayer idle RPG of cow-themed skilling, crafting and combat with a player-run market.
Run a fantasy town, send adventurers on quests and race rival mayors in the arena.
Cyberpunk text MMO of turn-based party fights, six professions and organisations warring over zones.
A menu-and-map MMORPG online since 2002 where crews raid Gods and Bosses for rare loot.
Bee-colony incremental where hives trade on a market and swarms fight off a giant hornet.
Text-based idle MMORPG where your fighter grinds monsters while you plan parties and villages.
Medieval idle MMORPG with five-player parties, village wars on a live map and an open API.
Party-based idle MMORPG inspired by Ragnarok Online, where you script how your heroes fight.
Norse text RPG of raids, blood feuds and warbands, played in a browser tab.
Multiplayer railway tycoon where associations grow their city through six eras of trains.
A sandbox fantasy MMORPG of faction contracts, crafting stations and a player-run marketplace.
Open-beta music career sim: write songs, form bands with other players and tour 180 cities.
An idle MMO of 30 skills, task queues and clan raids on a hand-painted map.
Browser action RPG with quests, boss fights, classes and faction war, formerly Raining Chain.
A 2D pixel-art fantasy MMORPG with action combat that runs straight from a browser tab.
A gangster MMORPG online since 2007 with city trading, crews, turf and player-owned casinos.
A mobile-first mafia RPG of crimes, heists and family wars across ten city districts.
Band management sim where you write, release and tour against real players on nightly charts.
A classic group-based fantasy browser RPG where heroes crawl dungeons together in turns.
Text-based mafia PvP game of missions, heists and shootouts for control of your mob.
Co-op hard-science space MMO flown with real physics across a 1:1 Solar System.
Other tags
Text-based 204Graphical 159Turn-based 60Real-time 146PvP 257PvE 179Guilds and factions 254Player economy 173Energy system 40Open source 3Mobile apps 61Mobile-friendly 74No download 35Long-running 111Indie 169Permadeath 9Seasons or rounds 64Roleplay 354X 15Diplomacy 50Crafting 89Sandbox 10Collecting 34