https://shamefulradio.itch.io/wicked...-version-alpha
This RPG allows players to finish off enemies by inflating them. The main character can also inflate herself to gain two new moves. Right now there's only a demo available, but it shows a lot of promise. Every enemy has a multi-stage inflation.
EDIT: Sorry, the title is WICKED Pump. I don't know how I messed that up.