Undertale: One Left
Tracked since by TheoreticallyTheDev
Performance
Profile
Concurrent players
Metrics over time
About & history
About
just another ulc fangame
Tracked since by TheoreticallyTheDev
just another ulc fangame
No changes recorded since tracking began.
No changes recorded since tracking began.
No changes recorded since tracking began.
No changes recorded since tracking began.
No changes recorded since tracking began.
No changes recorded since tracking began.
Avg CCU by hour (UTC) · last 4 weeks
0
0
0
#27,064
#25,373
—
80.0%
405
7
—
—
5
10
2y 8mo
All ages
Free access
Key moments in this game's history
Avg CCU by day · last 4 weeks
CCU 24h
—
CCU 7d
—
CCU 30d
—
Rank 7d
▼2749
Visits 24h
—
Favorites 24h
—
How many people play Undertale: One Left right now?
Undertale: One Left has 0 concurrent players right now. Its all-time peak is 0 players, reached in September 2026.
Who made Undertale: One Left?
Undertale: One Left was created by TheoreticallyTheDev on Roblox.
Is Undertale: One Left popular?
Undertale: One Left is ranked #27,064 on Roblox by concurrent players.
How many visits does Undertale: One Left have?
Undertale: One Left has 405 total visits (405).
What is Undertale: One Left's rating?
Undertale: One Left has a 80.0% like ratio from Roblox player votes.
When was Undertale: One Left created?
Undertale: One Left was created in December 2023 — about 2 years old.
How many players can join Undertale: One Left at once?
Up to 5 players can be in a single Undertale: One Left server.
Is Undertale: One Left appropriate for kids?
Roblox lists Undertale: One Left as suitable for all ages.
When was Undertale: One Left last updated?
Undertale: One Left was last updated in January 2026.