Four spatial puzzles, one clock: roll a die, free a car, untangle the ropes, land a block. Fast enough and you are an Architect-Engineer.
Shortest first, longest last. Each game pays 15 points for a win down to 1 for finishing, and the circuit adds all 4 up. A game played on its own still counts toward it, but you need all 4 in the same day to take a rank on the circuit board.
The same 4 games every day, with new puzzles in each of them at midnight Eastern.
See all the circuits