buy 15 energy with cookies, remember I have to claim workshop items, said items cause level up...12 credits gone... but don't worry "you can't lose anything in this game"
DEVS: why don't you change the game so when you level up you get a ruby and a coffee jug instead of a ruby and energy refill. This would make it so the player gets the refill when they need it, that way the player doesn't lose energy they just purchased.