The World Called Hollow: Free, online, web-based, multiplayer role-playing game
Hollow is a free Multi-User Dungeon (MUD) that focuses on role playing. This online, browser-based RPG is a PG-rated online game.
https://www.hollowgame.com/
Browser Based
The Dark Grimoire: A free text based roleplaying online game. ( MMORPG )
A free Web based persistant multiplayer role playing game. Fight with other players for fame and fortune!
https://www.darkgrimoire.com/
Sryth - browser-based fantasy text RPG
Sryth is a free single player online fantasy text RPG. Step into an immersive, richly-detailed world of epic fantasy adventure.
http://www.sryth.com
Lunatix Online: Global Insanity Crisis
Lunatix Online is a browser-based multiplayer role playing adventure game set in a wacky mental institution. Features fully-integrated chat, in-game mail, lots of ways to interact and express your insanity in a crazy quest to escape. Play free, with no obligation to subscribe.
https://www.lunatix-online.com/