Undertale: Testing Grounds.
A Roblox experience owned by zeevee studios.
Fighting & PvPENSansUndertaleFighting
Description (written by the developer; not a statement by this register)
this is one of those games where your a sans and you play as sans to be the best sans and theres other sanses and you kill all of them. wow, that took a dark turn. the people working on the game right now are azreal_dreemar (creator) alternatemyths (asset maker) fortnite_3262 (general edits) and, of course, catpawlink (literally does nothing he didnt even ask to work on this). update: new model, check the lobby to test it. known issues: Bone zone will stay if not despawned after player death| Health Bar Will Damage You and make you regen to the set health for morphs.
Last updated by the developer 24 Sept 2022, 00:41 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 We do not publish numbers we have not measured.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 |
|---|---|---|
| 12 Aug 2026, 21:03 | 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.