Revolversweeper is a free 3D variant of the video game Minesweeper: Triangular fields are mapped to a globular polyhedron. As an HTML5 browser game you can play it online on modern desktop computers, tablets, smartphones...
If you are using a mouse and a keyboard:
If you are using a touchscreen:
Hold the shift key and click on a triangle to reveal it.
Hold the ctrl key and click on a triangle to mark/unmark it as a mine.
Drag the polyhedron to change it's rotation.
Use the mousewheel to control the zoom level.
The lateral buttons switch the control mode:
Control mode REVEAL: Tap on triangles in order to reveal them.
Control mode MARK: Tap on triangles in order to mark/unmark them as mines.
Control mode MOVE: Drag the polyhedron to change it's rotation, pinch to zoom.