I make games for androyd, still at the initial stage, a lot of time there. The game will be a puzzle, arcade, etc. I wanted to place a demo version in Google Play did not work, was busy, add the following week. The game will be constantly updated, adding new levels, etc.
I think on the first level you should explain the game a little. Maybe a popup or two just to say “when you click this block it will tilt” for example.