Hm... you get energy from nowhere... so you can just leave it running, then slowly upgrade with nothing on the screen. When you are ready, place your universe and you win.
Whatever... I really didn't like the controls. Why can't I use arrow keys once I select a block? And I got a level to the point where there were three blocks left, all miles away from each other, and it wouldn't end, plus the blocks kept colliding with stuff that wasn't there.
I think Monster Slayer is a pretty cool guy. eh kills deimons and doesnt afraid of anything. The demon slayer rocks... he just walks along killing mobs on "Quick March", you don't even have to click "Attack" or "Defend".
 "The Mage Dungeon"){kind=icon}
 "Jump Noir - a monochromatic Jump & Run"){kind=icon}
 "Atomic Galaxy Factory"){kind=icon}
 "Hands of War 2"){kind=icon}
 "Interlocked"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Monster Slayers"){kind=icon}
 "GrindQuest Beta"){kind=icon}
Yep, if you want to wait for 10 minutes, then feel free! :-) Would probably add some kind of cap or pushback in another version.