I believe all the interactive fiction games are accessible because they are text-based and run in the browser, so should be compatible with any screenreader. They don't all require typing—Draculaland, Zeppelin Adventure, Pirateship, and The Party Line use the same link/button-based interface as Detectiveland here. Gruesome, Hamlet, Portcullis, The Xylophoniad, and Aunts and Butlers are text-based browser games, so should still work with screenreaders, but do require typed input from the player (like NORTH or TAKE CUCUMBER or PUT TEA IN TEACUP.) The graphical puzzle games (Zookoban, Block Pushing Time Travel Game, Homicidal Robots Inc, Soul Pusher) and the Bitsy mini-game (Bicycle Centaurs) are probably not accessible if you can't see the pictures, sorry about that.