Good game, but too many difficult levels you can only pass by spending money. The golden ticket for perks you only get by spending money. The challenge levels that are impossible to pass without spending money and losing your bonuses due to not passing them. I find I only get these when I've built up a decent run. Long time player but find my self rarely bothering now because it is just a money grab and the fun is going purely due to that. Its just frustrating, not fun.