Toy Bricks Builder 3D

Toy Bricks Builder 3D is listed here under Puzzle. There is no launcher and no install between you and it. Taps and swipes are the whole vocabulary — a phone plays it best. Catalogued as 3d, android, boy, brain, bricks.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. It costs nothing and asks for nothing: no registration, no download, no launcher.