Mermaid Testing vs Build a Roller Coaster
Build a Roller Coaster currently leads with 3,329 concurrent players against 2,950. On all-time peak the record belongs to Build a Roller Coaster at 5,304 concurrent players, versus 3,842. Momentum favours Mermaid Testing: +16.1% week over week versus +7.5% for Build a Roller Coaster. Lifetime, Mermaid Testing has more visits (681.4M vs 117.4M). Full side-by-side history for Mermaid Testing and Build a Roller Coaster is charted above.
Mermaid Testing ðŸ¥
2,950
playing now
3,842 24h peak · 681.4M visits
VS
Build a Roller Coaster🎢
3,329
playing now
4,859 24h peak · 117.4M visits
Player count history
Mermaid TestingBuild a Roller Coaster
Head to head
| Metric | Mermaid Testing | Build a Roller Coaster | Difference |
|---|---|---|---|
| Playing now | 2,950 | 3,329 | 379 |
| 24h peak | 3,842 | 4,859 | 1,017 |
| 24h average | 2,877 | 3,756 | 879 |
| 7-day peak | 3,842 | 5,185 | 1,343 |
| 7-day average | 2,089 | 3,536 | 1,447 (1.7×) |
| 30-day peak | 3,842 | 5,185 | 1,343 |
| All-time peak | 3,842 | 5,304 | 1,462 |
| 24h change | ▲ 22.1% | ▼ 0.3% | — |
| 7d change | ▲ 16.1% | ▲ 7.5% | — |
| Total visits | 681.4M | 117.4M | 564M (5.8×) |
| Visits (24h) | 420.3K | 316.9K | 103.3K |
| Visits (7d) | 2.3M | 2.2M | 93.2K |
| Favorites | 535K | 233.8K | 301.2K (2.3×) |
| Rating | 77.7% | 82.6% | — |
| Global rank (players) | #647 | #562 | of 8,283 |
| Trending score | 129.0 | 22.1 | — |
| Created | Oct 21, 2020 | Oct 6, 2025 | — |
| Genre | Roleplay & Avatar Sim | 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 — 12 days for Mermaid Testing, 12 for Build a Roller Coaster.