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[MORE REWORKS!] Undertale: Back To The Underground

[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.

0
playing (measured 10 Aug 2026, 21:30 UTC)
793
lifetime visits
87%
liked (13 👍 / 2 👎)
22
favourites (27.7 per 1k visits)
17 March 2024
created (per Roblox)

Play on Roblox →

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 We do not publish numbers we have not measured.

Measurement log — every players count we have recorded
Measured (UTC)PlayersChange
10 Aug 2026, 21:300first reading

Concurrent players at each of our measurements (insert-on-change).

Monetization — game passes

Ultimate Donation
400 R$
ToxinTale Sans!
300 R$
Really Bad Time Sans!
175 R$
Big Donation
150 R$
Donation
50 R$

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

You Played! · welcome467 · 0.00% win
Rejuvenation Badge! · other32 · 0.00% win
Disbelief Badge · other28 · 0.00% win
Sudden Changes Badge! · other24 · 0.00% win
StoryShift Chara Core Encounter Badge! · progression19 · 0.00% win

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.