Verdict: Declining. [Halloween] Undertale Multiverse Simulator 1.5 is declining: down 30% over 30 days, lagging the platform. Roblox overall moved +5% over the same period.
232 players online · 7-day average 371 · 30-day average 357 · 30-day change -30.2%.
All-time peak 1K on 2026-09-12, 51 days ago. Today's count is 18% of that peak.
RoWatcher samples Roblox's public API for every tracked game every five minutes and keeps 71 daily aggregates for this game. The verdict compares the last 30 days against the previous 30 — daily wobbles are ignored, so a game is only called dying on a sustained move.
[Halloween] Undertale Multiverse Simulator 1.5 is declining: down 30% over 30 days, lagging the platform. Roblox overall moved +5% over the same period.
232 concurrent players as of this page's last refresh. The 7-day average is 371.
1K concurrent players, on 2026-09-12. The current figure is 18% of that peak.
2026-09-12, 51 days ago.
By comparing [Halloween] Undertale Multiverse Simulator 1.5's 30-day average concurrent players against the prior 30 days, using RoWatcher's own 5-minute samples. A verdict of dying requires a fall of 60% or more over that window; declines under 20% are called stable.
Full [Halloween] Undertale Multiverse Simulator 1.5 stats, charts and revenue estimate. Browse other live Roblox player counts or the charts.