Who's That Isaac is a minigame inspired by the famous "Who's That Pokémon" question-and-answer segments from the Pokémon franchise where viewers need to guess the Pokémon from the shown silhouette. In this Isaac-themed version of the game users need to guess the Isaac item based on the shown silhouette.
The game features a rooms/floors system based on the floors from the actual game - guessing items correctly will advance you to the next room and eventually to the next floor, until reaching The Void!
Difficulty varies as more items are guessed - silhouettes may appear randomly rotated or flipped, curses may appear, and more! Players may use various hints in exchange for a points penalty.
The following features are currently available: