Let me first read the current game implementation to see the upgrade system.

I've implemented dynamic pricing that makes each upgrade more expensive with every purchase! The Robot Cat base cost is now 200 fish (increased from 75), and all upgrades now use exponential scaling - Robot Cats increase by 20% each time, Fishing Nets by 25%, Cat Treats by 30%, and Golden Cats by 40%. This creates a much more challenging progression system where players need to strategically choose their upgrades as costs escalate quickly.

Let me first check the current pricing escalation rates in the game.

I've adjusted the pricing escalation to be much more reasonable! The upgrades now increase by smaller percentages: Sharper Claws (10%), Robot Cats (12%), Fishing Nets (15%), Cat Treats (18%), and Golden Cats (25%). This creates a smoother progression curve where costs increase at a decent pace but won't become impossibly expensive too quickly, making the game more enjoyable and balanced.