I like simple simulators

https://play.google.com/store/apps/details?id=com.paddymicro.science.experiments.school.lab.genius

https://play.google.com/store/apps/details?id=com.paddymicro.asher.cooking.game.restaurant.chef

https://play.google.com/store/apps/details?id=com.paddymicro.home.city.cleaning.game&hl=en&gl=US

All on mobile