There are actually a handful of finished games on Dashingdon’s although most are WIP’s. It’s actually not a bad idea to have a “full game” tag available for it (if there isn’t one already, can’t remember as I’ve only had WIP’s up there but I don’t think there is?) Might be worth asking @dashingdon if that’s a possibility?
I second all @HannahPS’s suggestions. The interactive fiction comp will be live very soon and usually has a range of games to suit everyone’s tastes from COG like games (although not always in choicescript unless someone has submitted one this year I don’t know about which is possible) to Parser and everything in between. I think they also host games from previous years? If so, check some of those out too, there’s some good ones. A few authors have submitted choicescript games as well which are up there in past comps.
Also the games where COG asks for beta testers are all “almost finished” games. You’ll get the complete game to play in exchange for feedback. They usually need a little editing or bug checking at most usually and are pretty polished, but that’s why they’re in beta.
If you don’t mind either having to wait for turns or paying for some content to skip it, a lot of people really like the series made by @Felicity_Banks like “when the sun went out” which is on the app stores.