Been working on the background generation. It's impossible to get the exact "Soft landscapes" effect with paralax, but I think I can come close.
It will take several passes/reworks to get the feel that I want, but here's how it looks after the first try.
The mountains are deterministic, meaning that I can go from level 1 to 100, take a screenshot, kill the app/stop playing and it will load up level 100 looking the same (not based on any save data other than the number 100). That took a while to wrap my head around (especially with paralax, guuuuh) but it's in now.
Current issue is that the random functions aren't cross platform deterministic. Trying to find a way around that.