If you happen to be a thermal engineer with a specialty in low temperature, cryogenic applications and you’re feeling a little out of practice, a new interactive training simulator can get you back up to speed.

Cool-It emerged from The University of Wisconsin-Madison’s Division of Information Technology department. Users choose from a selection of jobs for the Navy or NASA—overseeing a variety of minesweepers or space depots—before being tasked with building the object so that it falls within tolerances.

The Flash-based sim is rather polished and the explosions resulting from failed engineering attempts are neat as well… trust us.