If reverse-engineered Nintendo games count, then Super Mario 64 and Pokemon Emerald whose engine is technically open source.

EDIT: Minecraft Beta 1.7.3 has been reverse engineered multiple times too.

Second Mindustry, I played it up once and it was great. Basically Factorio for phones.

They already crippled the mobile site years ago and put login walls from a long while ago, way before the pandemic. old.reddit.com was the only thing that let me skip it. They deserve to die out.

Return in all aspects to how it used to be in 2014 or earlier, but it will never happen because enshittification cannot be reverted.

That includes the bloated inefficient new design that includes an intentionally hostile mobile website that shits the bed on 3G connections, the echo chamber machinery, random layout shifts, NSFW login walls, automated censorship and shadowbanning, the privileges for the big subreddits and the big sponsored powermods.