Note that if your numbers get too big, they wrap around negative, and then if they are negative when an epoch ends the game locks up. The dangerous value is around 2147483647, which is too bad because I was only going to hit something on the order of 2^35.

Also note that infinite loops are secretly not allowed-- the game will forcibly end your turn after either ~100 energy has been spent or ~20 shuffles have been done, not sure which.

Cool idea, great game, balance is a bit off imo (maybe not very). Hard to get a good run, sometimes you just get screwed by enemies. When you do it can be a total killer. Maybe a good idea is to implement a system that reduces a chance of series of enemies, especially in early stages.  Cards are a bit hard to read in some screens.

Surprisingly compelling!  I look forward to seeing where this goes.  A few idle thoughts:

• Enemies can be a lot to handle--for instance, thanks to a Saboteur, I almost didn't make it out of Epoch 1 in one game.  You might want to make them, if not more rare, at least not appear in the first epoch.
• I played five or six games (good sign!), and never made it past Epoch 3 at best.  I don't know if that's because the game is hard or because I'm no good at it, but offering it as a data point.