A recent post on the Binding of Isaac website provided some information on booster updates, but what caught people's eyes more was the news that a new, secret project is close to being announced, one that sees Edmund McMillen collaborate with Closure programmer Tyler Glaiel.
"On a side note not many of you know this but Tyler and I have been in crunch mode for the past 3 months trying to finish this secret project," McMillen writes. "We are coming close to announcing it and its release date, so keep and eye out for it, I don't want to spoil the fun yet but I can say this:"
"It's hard, it's weird, it's personal, it has amazing controls, it's a totally new unannounced IP and its easily one of the largest games I've ever made level wise."
As noted by PC Gamer, this could be something brand new, or something that Glaiel teased on YouTube last year. What do you want it to be?