Undertale Multiverse Simulator Updates Hub
From the 1.0 hack through the May 2026 remaster, July events, and September badges.
This hub is the public patch map for Undertale Multiverse Simulator 1.5 on Roblox. The live file is a free Action / Battlegrounds experience with 15-player servers and R6 morphs. SlayerRealNotFake published it on 22 May 2026. Use this page when someone says “there was an update” and you need to know whether they mean the remaster itself, a July event, or a September badge.
Read the two child pages first. Version 1.5 Remaster is the live place, creator check, and kit-rework notes. Original Game History covers place 7915723993, Discord soul restores, the hack, and why you should not join that file. The timeline below is a reconstruction from Roblox stamps, badge create dates, and public showcases — not a promise that every room still matches last month’s footage.
How we date a patch
Roblox stamps the experience when the creator publishes. YouTube stamps when a showcaser uploads. Those two clocks disagree. A kit can sit in-game for days before a public video exists, and a video can show a move that a later hotfix already changed. When the two conflict, trust the live place, then treat Discord chatter as rumor until you can reproduce it in a current 15-player server.
Timeline
Original 1.0, then the hack
The first public place was 7915723993. It last received a real developer update in February 2025 and sat near 3.6 million visits. Lost-data restores went through Discord rather than an in-game support form. After the place was compromised, the community told people not to join that file at all. Full context lives on original game history. If a friend still sends the old ID, send them the 1.5 remaster page instead of arguing in chat.
1.5 remaster — 22 May 2026
SlayerRealNotFake opened place 112050560592995 (universe 10202515720) as a continuation after about a year offline. Kits were reworked instead of copied one-to-one from 1.0 because the new account could not ship the old attacks unchanged under Roblox rules. Souls from 1.0 do not transfer. Controls called out on the Roblox page: R lowers your HP on PC, Z opens the emote wheel, and gamepad shift-lock is X. Confirm the file on Version 1.5 Remaster before you grind.
Pesti Sans — July 2026
The Pesti Sans fight returned as an event kit. Community showcase notes sit around 2,000,000 souls plus the Pesti Sans Defeated badge (about 6,669 awards when we checked). The badge is still rare. Event kits as a group live on the event roster. If you are still on starter kits, finish getting started first; Pesti is not a day-one fight.
Stronger-zone showcases — July 2026
Public footage of the stronger character zone dropped mid-July: PhotoNegative, Epic Sans, Toxin, Dusttrust, Virus / Anti-Virus, Cross, DustDust, Murder Time Trio, and more. Soul costs in those videos are snapshots. Recheck prices in-game before you dump a route from the soul grinding guide. Community comments often treat 200,000 souls as the door into that wing — verify the door yourself; rooms move.
August 2026 character drop
Early-August footage added Swapfell Papyrus Phase 2, Scarlet Tenacity phases 1–3, Hyper Dust, and Fatal Error. Treat that list as “seen in 1.5,” not as a complete patch note. Pair it with the tier list and the starter roster so you do not skip cheap kits while chasing a showcase name.
September 2026 badges and patches
The experience was still receiving publishes into mid-September 2026 (we last saw 12 Sep 2026). Badge rollouts in that window:
- Pesti Sans Defeated — about 6,669 awards
- The ellipsis badge named … — 10k+ awards
- youve pushed too far — 10k+ awards, dated around 30 Aug 2026
- but he gave up… — created 8 Sep 2026, about 5k awards, roughly 27.7% win rate
Win-rate numbers are Roblox badge stats, not a guarantee you will clear the fight on a given kit. If you chase badges, confirm the trigger in a current server, then check codes and Discord links for any drop that shipped with the same publish. Full create dates, award counts, and listed win rates for those four live badges are on Badges.
What to open after a patch
- Confirm the place ID on Version 1.5 Remaster.
- Skim codes and Discord links for drops.
- Recheck getting started if controls or rooms moved.
- Ignore scripts that claim they restore 1.0 souls.
- If the patch is a new kit, jump to players or the event roster instead of guessing from a thumbnail.
This hub will grow with dated child pages. Until a dedicated patch file exists, the timeline above is the public record we can cite. For community footage that is not a patch, use community resources so you do not treat a YouTube upload date as a Roblox publish date.
How this wiki timestamps a change
We date a change from the Roblox experience clock first, then from a badge create date, then from a public showcase upload. That order keeps a July Pesti video from looking like a September patch just because you found it today. If a YouTuber and the Roblox page disagree, the place wins. Bookmark this hub — not a random Discord screenshot — when you need to explain whether 1.5 just updated or whether a friend is still watching last month’s stronger-zone footage.
Frequently Asked Questions
Quick answers to the most common questions.
When did Undertale Multiverse Simulator 1.5 launch?
The live remaster published on 22 May 2026. Details, the place ID, and the creator check are on Version 1.5 Remaster.
Do souls from the original game carry into 1.5?
No. The original place was compromised and 1.5 starts a fresh soul count. Read original game history before you chase old restores.
What shipped after the May remaster?
July brought the Pesti Sans fight and stronger-zone showcases. August footage added Swapfell Papyrus Phase 2, Scarlet Tenacity, Hyper Dust, and Fatal Error. September added badges such as youve pushed too far and but he gave up...
Where should I look for codes after a patch?
Start on the codes hub, then confirm any rumor in Discord links. Do not redeem strings from random server ads.
Is the old place 7915723993 still safe to join?
No. Community guidance is to avoid the compromised file. Play 1.5 only, and send returning players to getting started.
Where are the live Roblox badge stats for 1.5?
Create dates, award counts, and listed win rates for Pesti Sans Defeated, ..., youve pushed too far, and but he gave up... are on Badges.