Build a Marble Slide! vs Ro-Bio Injection Experiment
Build a Marble Slide! currently leads with 645 concurrent players against 460. On all-time peak the record belongs to Build a Marble Slide! at 1,048 concurrent players, versus 965. Momentum favours Build a Marble Slide!: -3.4% week over week versus -14.0% for Ro-Bio Injection Experiment. Lifetime, Ro-Bio Injection Experiment has more visits (60.8M vs 52.6M). Full side-by-side history for Build a Marble Slide! and Ro-Bio Injection Experiment is charted above.
Build a Marble Slide!
645
playing now
1,048 24h peak · 52.6M visits
VS
Ro-Bio Injection Experiment
460
playing now
599 24h peak · 60.8M visits
Player count history
Build a Marble Slide!Ro-Bio Injection Experiment
Head to head
| Metric | Build a Marble Slide! | Ro-Bio Injection Experiment | Difference |
|---|---|---|---|
| Playing now | 645 | 460 | 185 |
| 24h peak | 1,048 | 599 | 449 (1.7×) |
| 24h average | 746 | 460 | 286 (1.6×) |
| 7-day peak | 1,048 | 896 | 152 |
| 7-day average | 644 | 490 | 154 |
| 30-day peak | 1,048 | 896 | 152 |
| All-time peak | 1,048 | 965 | 83 |
| 24h change | ▲ 15.1% | ▲ 26.7% | — |
| 7d change | ▼ 3.4% | ▼ 14.0% | — |
| Total visits | 52.6M | 60.8M | 8.2M |
| Visits (24h) | 82.6K | 59.6K | 22.9K |
| Visits (7d) | 507K | 490.6K | 16.3K |
| Favorites | 1.5M | 125.6K | 1.3M (11.6×) |
| Rating | 91.3% | 94.7% | — |
| Global rank (players) | #1,726 | #2,143 | of 7,866 |
| Trending score | 43.9 | -15.6 | — |
| Created | Nov 11, 2025 | Oct 25, 2024 | — |
| Genre | Simulation | Simulation | — |
Other comparisons
Both games are sampled on the same schedule and plotted on a shared time axis, so the comparison is like for like. Peaks, averages and growth come from RoVitals's own recorded history — 10 days for Build a Marble Slide!, 8 for Ro-Bio Injection Experiment.