Isaac turns into a walking Mushroom after picking up three distinct items from the following list. Grants a Red Heart container.
Active Collectibles [ ]
I'm a big boy now!
Gigantifies Isaac for 30 seconds, increasing
damage and range while lowering tears, granting invulnerability, and allowing Isaac to crush enemies and obstacles he walks on. The effect persists between rooms.
Tears up. A mind changing experience!
tears, decreases speed, and distorts the screen. All effects become more pronounced with repeated use, and wear off by clearing rooms.
Passive Collectibles [ ]
Gives Isaac an extra life. Upon death, he will respawn in the most recent non-hostile room with full health, after which 1up! will disappear.
HP + tears up + shot speed down
Gives one full Red
Heart container, +0.7 tears, and -0.16 shot speed. Heals 2 additional hearts of health.
All stats up!
Makes Isaac bigger. Adds one Red
Heart container, +0.3 damage, x1.5 damage multiplier, +5.25 range, and +0.3 speed. Restores all health on pickup.
Speed + range up
Decreases Isaac's size, making him less likely to be hit.
+0.3 speed, +1.5 tear height, -4.25 range (effective range is increased). +0.3 speed, +1.50 range.
HP + DMG up, speed down
Grants one empty
Heart container, +0.3 damage, +0.25 range, +0.5 tear height, and -0.1 speed.
Tears + speed up, DMG down
tears, +0.3 speed, slightly reduces damage.
Tears have a chance to
shrink enemies, making them run away from Isaac. Shrunk enemies can be crushed and killed by walking over them.
Gives Isaac the chance to fire spore tears that stick to enemies and blow up after a few seconds, dealing damage and
poisoning nearby enemies and releasing more spores.
Trivia [ ]
Fun Guy is a slang term for psychedelic mushrooms and a wordplay on fungi.
Fun Guy may be a reference to the character of the same name in Chrono Cross. Fun Guy's appearance may be a reference to the character Toad, a humanoid mushroom from the Mario franchise.