Legacy Undertale Monster Survival
A Roblox experience owned by TEOTW.
Fighting & PvPENUndertaleSurvivalFighting
Description (written by the developer; not a statement by this register)
Thanks for all the support. Legacy UMS is no longer updated and we are putting all our efforts into the Rework of UMS. Report any data issues on our Social server. 🛑 PHOTOSENSITIVE WARNING: READ BEFORE PLAYING 🛑 This game contains flashing lights that may make it unsuitable for people with photosensitive epilepsy or other photosensitive conditions. Player discretion is advised. 👾 Welcome to Undertale Monster Survival! (UMS) 🔪 An intense UNDERTALE fighting game with popular gamemodes such as Free For All, Survive The Monsters, Battle Royale and the classic Monster vs Humans! 👾 Play as your favorite character from many AUs, all with their different playstyles and abilities! 👾 😈 Use the deadliest weapons as a Human to put a term to the Monsters' reign! 😈 ❗ PLEASE NOTE: The game is unfinished. Expect a lot of bugs and missing content. ❗ ✨ Thanks to everyone who helped with the development of the game! ✨
Last updated by the developer 25 Aug 2025, 12:07 UTC.
Live players over time
Growth
Growth history is still building. We hold one measurement for this entry. A trend needs at least two, taken days apart — so this will fill in on its own rather than being estimated. We do not publish numbers we have not measured.
| Measured (UTC) | Players | Change |
|---|---|---|
| 10 Aug 2026, 20:05 | 0 | first reading |
Concurrent players at each of our measurements (insert-on-change).
Monetization — game passes
Game passes for sale and their prices, measured from the Roblox passes API. Developer products bought inside the game aren’t publicly listable.
Badge funnel
How many players have ever earned each badge — a proxy for how far players get before they stop. Steep drop-offs mark where a game loses people. Win rate is the past-day share of players who earned it; categories are assigned by a language model from each badge’s own name and description.