What are some good non-freemium games for Android that I can play for a few minutes at a time?

Sherlock Zen is a logic puzzle game that looks like dos shareware from the win 3.1 era.

The previous version was one of the first android games I ever installed, I played through the free levels a couple of times but never bought the unlock.

I thought about it recently when doing a grid logic puzzle in a magazine I bought at the airport and went looking for it. I was sad that it didn't seem to exist anymore and eventually went down a rabbit hole and found the creators website which gave me huge nostalgia. He is also active on mastodon. So I bought the new version finally and have been thoroughly enjoying it!