Mr Spy 3D

Mr Spy 3D is one of the Stickman games here that asks for no download and no sign-up. Designed around touch input, and comfortable on a small screen. Tagged 3d, action, boy, boys, cool.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Close the tab and come back later; the game is still one click away.