I don't understand the point of even having keys. They don't regenerate unless the game is running. Every game that has some sort of life or key feature has it so it regenerates over time WITHOUT STAYING ON THE GAME SCREEN. Rather just tell players we are going to let you play only a limited amount of times and if you want to play more you gotta pay us for that because that's how greedy we are! Highly disappointed by zepto labs!