It's a very chill game. In theory it's a pretty lengthy experience due to the many building upgrades and combinations, as well as the many different ways you'll spend your money. The process is very smooth, but it isn't exactly fast paced. Hence the very chill game statement in the beginning.

It has excellent pixel art, soothing music, and a chill gameplay loop. It's really something you have up while you are devoted to something else. Idler games are weird like that. Anyway, if you're looking for something you can play kind of in the background and just periodically jump into - this might be exactly what you're looking for.