I'm working on my story-driven farming game! The gameplay involves growing a bunch of magical crops to incrementally transform each biome from a "bad" to "good" state. I've had a ton of fun developing it over the last few years! Here's the steam page (if curious): https://store.steampowered.com/app/2381040/Cirrus_Business/
"Hexcells Infinite" is a great stress-free (and cheap) game. It plays like Minesweeper, but every puzzle is completely solvable with just logic (there is never a need to guess!)
Yeah, UI containers are a little weird in Godot. Maybe a center-container (https://docs.godotengine.org/en/stable/classes/class_centercontainer.html) as parent node would help?