

Roughly in order of how much I enjoy them from most to least. (Not that the later ones are bad. Just that they’re more low-key.)
Mindustry is amazing, but as I mentioned above, really really addictive. (The commercial game it’s most often compared to is Factorio.)
Then there’s Shattered Pixel Dungeon. Amazing dungeon crawler.
Endless Sky is a great space mercantile sim.
Luanti is a Minecraft clone.
Unciv is a turn-based civilization development game.
And if you’re wanting to do emulation, there’s Lemuroid. Also, EasyRPG, an engine for playing RPG Maker games like Yume Nikki. Oh, FreeDoom is a great implementation of Doom for Android.
Those are the ones that’ll keep your attention for a good long time. There are tons of much simpler games that are still fun like Frozen Bubble and Hyper Rogue. And plenty of games that I haven’t really gotten into very much but that people really seem to like Dungeon Crawl Stone Soup.
Man. There are a lot now that I’m listing them out. Lol.
One could make a community named “Anon Posting” or something, lock it so only a mod can post, and then make the sole mod a bot that would post anything it got via DM (probably after automoding, rate limiting, etc) to said community.
I do think it’s a good idea for the bot to keep a log in case it gets abused for sufficiently evil purposes. One could add some extra functionality to the bot that would give identifying information about the poster to instance admins on demand (via DM), but I think instance admins would have pretty easy access to all DMs made to the bot, along with identifying information anyway. (Feel free to correct me if I’m wrong on that.)
Also, the bot could totally delete its logs and with them the identities of all posters after a while. Maybe a month?
And, of course, this wouldn’t be ironclad anonymity. But it would keep identities secret from anyone but the bot maintainer and instance admins.
Yeah, sounds like a pretty cool concept. Not volunteering to write such a bot (at least any time soon) or anything, but I support it.