In a recent Cryptic Sea blog post, Edmund McMillen took a break from talking about Gish 2 to wax off about a few of his side projects, including a 2d RTS game where your goal is to defend a dead carcass with an army of maggots! Nasty!
But the one that got me hot and bothered was Guppy, shown in the video above!
(Thanks, DMac!)