

Rather than getting a full-blown Isaac equivalent, sidekicks steal a heart from Player 1's life and spawn as a randomly-generated baby. Edmund McMillen recently posted a FAQ to explain how Rebirth's co-op works, and the short answer is: flying babies. What lurks in the touched-up labyrinth will presumably provide the same intensely-difficult journey found in Rebirth's predecessor, but thanks to Rebirth's addition of local co-op, we won't have to face the horrors alone.

The Binding of Isaac: Rebirth's renovated basement looks prettier than the one players fought through in the original 2011 release, but definitely still full of unsettling monsters.
