Undertale: Gaster Battle

A Roblox experience owned by Da Undertale Group.

RoleplayENUndertaleBoss FightFan Game

Description (written by the developer; not a statement by this register)

Unfortunately, to play creator need to play too :P

Last updated by the developer 16 Feb 2020, 17:40 UTC.

playing (measured 21 Aug 2026, 05:00 UTC)

1,869

lifetime visits

36%

liked (5 👍 / 9 👎)

favourites (7.5 per 1k visits)

14 February 2020

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 We do not publish numbers we have not measured.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)	Players	Change
21 Aug 2026, 05:00	0	first reading

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

Monetization — game passes

Admin

20 R$

Game passes for sale and their prices, measured from the Roblox passes API. Developer products bought inside the game aren’t publicly listable.