[MORE REWORKS!] Undertale: Back To The Underground
A Roblox experience owned by Determined World: After Reset.
Fighting & PvPENUndertaleFightingRPG
Description (written by the developer; not a statement by this register)
Leave and Like and share with your friends! 👍 This game consist in figthing as sans against another characters like papyrus, chara, frisk etc. (remember there's alternative universes characters to play with too!). 🗡️ Unlock the characters playing and fighting other characters or teaming with them! ⚔️ / 🛠️ (You gain 100 LV 30 seconds) 💖 (You can use that LOVE to unlock characters!) 🎁 Also you can unlock RESET Characters too, there's a lot of them from different alternative universes! ✨ All you have to do is reset at LV 12000 and then you will have 1 reset. (Reset multiple times to unlock alternate characters) 💫 (Don't worry if you leave or disconnect, there's no data reset so you can keep your stats permanently! except if you reset cause it cost LV) 🗳️ Join the group to unlock a special character! 🎁[SOON] https://www.roblox.com/groups/9846291/Determined-World-After-Reset#!/about Next update SOON 🔨 What will it include? -Group Sans - AntiVirusTale Characters!
Last updated by the developer 11 Feb 2026, 02:02 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 We do not publish numbers we have not measured.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, 21:30 | 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.