Verdict: Declining. [UPD] Build a Submarine 🌊 is declining: down 31% over 30 days, lagging the platform. Roblox overall moved -6% over the same period.
9 players online · 7-day average 9 · 30-day average 13 · 30-day change -31.2%.
All-time peak 78 on 2026-07-22, 90 days ago. Today's count is 12% of that peak.
RoWatcher samples Roblox's public API for every tracked game every five minutes and keeps 181 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.
[UPD] Build a Submarine 🌊 is declining: down 31% over 30 days, lagging the platform. Roblox overall moved -6% over the same period.
9 concurrent players as of this page's last refresh. The 7-day average is 9.
78 concurrent players, on 2026-07-22. The current figure is 12% of that peak.
2026-07-22, 90 days ago.
By comparing [UPD] Build a Submarine 🌊'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 [UPD] Build a Submarine 🌊 stats, charts and revenue estimate. Browse other live Roblox player counts or the charts.