Oh ok, I'll refer my friends, they actually work with Unity.

We have developer docs available for any game providers to develop bitcoin based games.

speedwallet

bitcoin

Speed wallet's mini-apps suggestions

anon

Better suggestions would be a:
1. sats to other currency converter

2. A tapping sats game like hamster Kombat which would take up sufficient app memory but would be fun and interactive (it should be for collecting points which can be converted to sats, else it would be exploited)

3. Allow private developers who make games to host web apps there