A big time wall happens after unlocking sweeping, as tier 4 darkness costs 10,000 shards, you get on average 500 shards, and nothing new is there to help you. It might be related to the size of the screen, but I can't change it so...
Viewing post in CLEANSED jam comments
I balanced the game around being active, so you’re probably missing something. Screen size doesn’t have to do with much. As someone else said already, try checking the shop. If you can’t see anything, try scrolling. If you’re on a phone, try rotating into portrait mode (I’ve had reports of scrolling not working).