Unleash the Power of Alternate Universes in Undertale Multiverse Simulator
Your ultimate Undertale AU fighting game companion. Active Souls and Gaster Shards codes, Error and Ink Sans character tier lists, Phase 5 awakening calculators, and combo execution guides.
Latest Active Promo Codes
Verified working Souls & Gaster Shards for August 2026
S-Tier Multiverse Gods
Unstoppable fighters with unblockable CC and hyper-scaling Karma damage
A psychotic AU destructor living in the Anti-Void. Uses indestructible blue puppet strings to trap enemy souls and summons glitched Gaster Blasters that pierce dodge invulnerability.
Guardian of the Undertale AU Multiverse. Uses his giant paintbrush 'Broomie' to paint portals, summon paint elementals, and counter enemy attacks with color vials.
The embodiment of death in the Undertale pantheon. His scythe bypasses physical armor and inflicts lethal continuous Karma decay on any living target.
Phase Evolution Calculator
Calculate Soul points required to awaken Phase 2 through Phase 5 Omnipotent Sovereign forms.
Dodge & Karma Guide
Master Blue Soul gravity mechanics, I-frame dodge timing, and rapid EXP farming routes.
Multiverse 1.5 Notes
Read all about the Doodle Sphere expansion, Error Sans raid bosses, and new promo codes.
Frequently Asked Questions
What are Undertale Multiverse Simulator 1.5 codes?
Codes provide free Souls, Gaster Shards, and EXP boosters to unlock and awaken powerful Alternate Universe (AU) Sans and Chara fighters faster.
Who is the strongest character in Undertale Multiverse Simulator 1.5?
Error Sans and Ink Sans are currently S-Tier leaders due to unblockable soul stun strings and invincible portal dodge frames.
How do I awaken Phase 5 Omnipotent AU Sovereign form?
Farm 150,000 Souls, reach Level 100 on your chosen AU fighter, and complete the Anti-Void Boss Raid challenge.