A shape of cubes is drawn from one corner, and no cube is hidden. Only one of the four pictures shows it seen straight on from one of its six sides, which may be a side the drawing does not show. Pick that one.
3:00 on the clock, and it only runs while a question is on screen.
Questions get harder as you answer correctly and easier when you miss.
You start at the first level.
A right answer scores the question's points; a wrong one costs half as many. Guessing does not pay.