This means a lot to us, thank you so much! We had a blast working on the game and we were working nonstop because each of us always had another idea to implicate into the game, we are extremely proud of what we have accomplished in one week. About the space bar, it actually is a shift key icon, so you should be able to press shift to swim up, but you also can use the space bar as well. Maybe the shift button did not work in the game or it was a bug. But again thank you and for the feedback.