Really polished game! Controls felt nice and clean.
I only found out because of the video in the description, that you can skip the valves. When you activate them all on the first way, you always run out of time on the way back...
Thanks for playing! To be honest, I only learned about the valves the hard way too while play-testing at the last minute, haha. We were really pressed for time, so we couldn't give all the instructions we wanted to. ^^;