I know what you're talking about, I have tons of "first levels" that I like to develop more but haven't time to do all!
Cheers from a gamedev to another
Wow very addictive! I don´t know if I started playing one or two hours ago cause I lose time notion haha. Btw I don´t keep playing cause I already have all the hats and there are no more upgrades or achievements.
I think with a progressive difficult level and nice rewards this game can be easy played for 2-4 hours.