I am loving the game. It's a fully text-based incremental upgrades game with LOADS of upgrades and LOADS of prestiges required. On top of that, new worlds can be unlocked so you always have something to do somewhere, or a new upgrade which is just a few moments away. In-game premium currency is earned by playing and can be used for instant or permanent upgrades, depending on how patient you are.

It's also being regularly tweaked and improved by the dev, and I have something in mind to request right now...