MineTest on a SteamDeck is so fun, y’all.
(Edit: MineTest is a free and open source game engine that started as a clone of Minecraft, and has grown to be that, and much more.)
I would have tried it sooner, if someone had mentioned it to me, so I’m mentioning it to you.
Edit: Disclaimer, I’m not the author of this blog. It’s the walkthrough I followed to start playing.
Minetest is a game engine & launcher for Minecraft-like games. It and its various games are developed by a lovely open-source community.