Undertale: Judgement Day
A Roblox experience owned by Undertale: Judgement Day.
RacingENUndertale AUSans vs CharaMonster Evolution
Undertale: Judgement Day is a Roblox experience in the racing genre, created on May 6, 2020. The game has recorded 64,572,439 lifetime visits and 147,116 favorites. Currently, 71 players are active. The experience holds an 82% like percentage. It features gameplay involving humans fighting monsters with progression systems for weapons and souls.
Description (written by the developer; not a statement by this register)
Undertale: Judgement Day is a Sans vs. Chara type game. A team of humans fights against one monster and try to defeat them. Players can collect wins to buy new monsters, weapons, souls, and armors to become more powerful. You can also buy monsters and level them up through an evolution system to make them become very powerful. Thanks for playing! Owners: TomatoTrap/WeegeeEZ Credits to Toby, the creator of Undertale Credits to all AU owners and music composers Warning: This game contains bright, flashing lights
Last updated by the developer 6 Jul 2026, 03:01 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 We do not publish numbers we have not measured.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, 15:32 | 67 | 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.
Roblox recommends these alongside it
Roblox’s own “games like this” rail, as we recorded it on 17 October 2026. The order is Roblox’s, not ours. Which games it points at most →
Like ratio over time
Growth
| Measured (UTC) | % liked | Change |
|---|---|---|
| 22 Oct 2026, 14:08 | 82 | no change |
| 12 Oct 2026, 14:07 | 82 | no change |
| 2 Oct 2026, 14:05 | 82 | no change |
| 22 Sept 2026, 14:04 | 82 | no change |
| 12 Sept 2026, 14:01 | 82 | no change |
| 2 Sept 2026, 13:53 | 82 | no change |
| 23 Aug 2026, 13:49 | 82 | first reading |
Percentage of votes that are likes, at each of our measurements. A falling line is a game losing its crowd’s goodwill.