@IanBadcoe Ok, i get the idea. Lean into the weird tunnel geometry and it will give a new flavour to the classic deck building recipe. Refining games you like is a good starting point, just be wary not to copy unnecessary mechanics.
If you are coding in C# I strongly recommend you look into #chickensoft - they have fantastic tools that will make your life much easier (I'm not affiliated, just a big fan)
This is a good jumping off point: https://chickensoft.games/blog/game-architecture