Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki
Added in Repentance

Planetariums are special rooms added in The Binding of Isaac: Repentance containing astronomical items. This item pool only has passive items. The only other room based item pool that has this property is the boss room item pool.

Passive Collectibles[]

Name ID Icon Weight Description
Jupiter 5.100.594 Jupiter
+2 red Heart containers, -0.3 speed. Isaac builds speed while standing still, and releases poison gas clouds when he moves afterwards.
Luna 5.100.589 Luna
Adds an extra Secret Room and Super Secret Room to each floor. Secret Rooms contain a beam of light that increases tears for the current floor and gives half a soul heart.
Mars 5.100.593 Mars
Dash by double-tapping the movement key, becoming invulnerable and damaging enemies. There's a short cooldown before Isaac can dash again.
Mercurius 5.100.590 Mercurius
+0.4 speed. Doors stay open after entering a room, even in rooms with enemies.
Neptunus 5.100.597 Neptunus
Isaac's mouth fills with tears over time while not firing, up to a cap. Holding the fire button will release all stored tears in rapid succession.
Pluto 5.100.598 Pluto
Significantly shrinks Isaac, allowing him to squeeze between objects and makes some enemy shots pass over him. Also gives +0.7 tears.
Saturnus 5.100.595 Saturnus
Upon entering a room, a circle of tears orbits Isaac. Enemy tears have a chance to be caught in orbit, turning them friendly.
Sol 5.100.588 Sol
Reveals the location of the Boss room. Upon defeating a boss, activates XIX - The Sun, fully recharges Isaac's active item, grants bonus damage and luck for the rest of the floor, and removes curses.
Terra 5.100.592 Terra
Replaces tears with rocks that deal variable damage, have increased knockback, and can destroy obstacles.
Uranus 5.100.596 Uranus
Isaac shoots ice tears, which slow enemies and freeze monsters they kill. Frozen enemies slide away and explode into ice shards when touched.
Venus 5.100.591 Venus
Adds one red Heart container. Enemies near Isaac become charmed.

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