Games
Party Games
Gartic Phone Like Pictionary, but on your computer.
Skribbl Like Gartic Phone, but not.
Drawception Like Skribbl, but with strangers.
Cards Against Formality The Out of Pocket Championship.
Pet Collection
Chicken Smoothie Little guys!
Xanje MORE little guys!
Goatlings Goats!
Flight Rising DRAGONS!!!!!!!
MUDs and MMOs
Iron Realms Entertainment A collection of MUDs, mostly fantasy.
Furcadia An expansive anthro fantasy virtual world.
Star Stable Horses!
Choose Your Own Adventure
Dragonchoice: Candidate For Dragonriders of Pern (and general dragon) fans.
Choice Of Games A vast array of free online choose-your-own-adventure games.
Other
Cookie Clicker A game about numbers going up.
Clan Generator Manage your own Warriors-inspired Clan.
Adventures With Anxiety A game about mental health.
Cool Math Games A grade school classic.