I think it’d be cool to have a small slew of extra difficulty modifiers (similar to bindings in Hollow Knight’s Godhome) that can be toggled on and off. These would ofc be completely optional (unless we add C+++ sob) and beating a deck with a side bet gives the deck itself a sticker on the backside of its playing cards.
Side bet examples:
Striped Side Bet: Faster Scaling
-# 1 tier of scaling faster, if on purple stake+, the ante 8 small blind size is 400k
Spotted Side Bet: Recession
-# interest is given as $1 per $7 held
Plaid Side Bet: Extra Finisher Blind
-# replaces the ante 4 boss blind (ante 12, 20, 28, etc in endless)
Splattered Side Bet: Scummy Shop
-# shop rerolls scale by $2
Smeared Side Bet: Stickered Consumables
-# consumables are given a 30% chance to have a random sticker (eternal consumables can still be used up, they just can’t be sold)
Chevron Side Bet: Defunct Planets
-# planet scaling is halved, rounded down
/j