I had a lot of fun playing this, a nice idle game, but like other commenters i found that after a certain amount of operations running the heat bar did not increase and I could just buy as many of that operation as I wanted. The graphics and audio are absoultely ace, i really loved how it looked and sounded, and the tutorial explained everything well in a way that made sense in-game. I definitely played more of this than i should have. Great game!