Hi, thanks for playing! The Black Cat update took 9 months to make and we need money to continue making updates 😅
The paid Steam version will include all future updates for free, and you can also play the game free (with ads) on mobile.
so you put the paid game on steam why do you need money to make more updates?
another thing:
you couldn't make the game with Unity so you don't need a "D3D11 compatible GPU"?
