Revenge of the Sunfish 2 is going to be- WELL IT'S SO OBVIOUS -the sequel to ROTSF1. I have been hearing that the creator of the game was not going to make the sequel freeware. He also recorded part of ROTSF2's gameplay and put it on his channel. A demo of the game has been featured at Rezzed (an Indie Game jam or convention. Footage about Rezzed was also posted to his channel. As far as I know about the game, the first level features Dr. Bob on a moon-like area shooting random monsters then runs into one and goes to the next level.