Wow a new update. After 1.9 with the appearance of Newground, Blast Processing and Theory of Everything v2.

Topala said: "User account system. (Unique user names and backup, will include more in update 2.0)"

On Facebook: "Highscore system is back online and should be a lot faster than before. More info about the Steam version and update 2.0 coming in the next few days. Thanks for waiting! :)"

He posted two pictures featuring "The Invasion has Begun" and a world featuring Super Mario.

On my guess the monsters move and are the equivalent to spikes when you land on it and moves like a spike ball. Though in Theory of Everything v2 there is a monster that looks similar to those in the picture. About the Steam Version it's already out before Update 2.0 and you can get it now on PC and MAC.