Both games play like a fusion of the room-by-room dungeons in The Legend of Zelda, and the random/procedural dungeon-design of roguelike games. As far as I can tell, the goal of the remake was to solve some stability and performance problems in the old engine, and the new engine required a change in art-style so a shed-load of new content was added in the process. Binding of Isaac Rebirth, henceforth BOIR, is a remake of Edmund McMillen‘s seminal horror game Binding of Isaac. If horror games and gross stuff aren’t for you, don’t click the “Read More”.
The starting room doesn’t look so bad, but I advise you skip the rest of this post if you’re disturbed by gore, Satanism, more gore, poop, aggressive sentient poop, yet more gore, Oedipal nightmare fuel, & even more gore. This doesn’t look so bad it’s somewhere between The Legend of Zelda and Muppet Babies.