Survive and Kill the Killers in Area 51 !!! vs Build a Zoo
Build a Zoo currently leads with 2,945 concurrent players against 1,508, a 2.0× advantage. On all-time peak the record belongs to Build a Zoo at 13,063 concurrent players, versus 2,264. Momentum favours Survive and Kill the Killers in Area 51 !!!: -3.4% week over week versus -13.2% for Build a Zoo. Lifetime, Survive and Kill the Killers in Area 51 !!! has more visits (1.8B vs 521.6M). Full side-by-side history for Survive and Kill the Killers in Area 51 !!! and Build a Zoo is charted above.
Player count history
Head to head
| Metric | Survive and Kill the Killers in Area 51 !!! | Build a Zoo | Difference |
|---|---|---|---|
| Playing now | 1,508 | 2,945 | 1,437 (2.0×) |
| 24h peak | 1,989 | 5,665 | 3,676 (2.8×) |
| 24h average | 1,460 | 3,468 | 2,008 (2.4×) |
| 7-day peak | 1,989 | 5,665 | 3,676 (2.8×) |
| 7-day average | 1,271 | 3,651 | 2,380 (2.9×) |
| 30-day peak | 1,989 | 5,665 | 3,676 (2.8×) |
| All-time peak | 2,264 | 13,063 | 10,799 (5.8×) |
| 24h change | ▲ 14.2% | ▼ 5.2% | — |
| 7d change | ▼ 3.4% | ▼ 13.2% | — |
| Total visits | 1.8B | 521.6M | 1.3B (3.5×) |
| Visits (24h) | 169.3K | 265.6K | 96.3K (1.6×) |
| Visits (7d) | 1.1M | 2M | 870.6K (1.8×) |
| Favorites | 4M | 3M | 983.1K |
| Rating | 89.6% | 96.3% | — |
| Global rank (players) | #970 | #543 | of 8,283 |
| Trending score | 46.2 | -17.6 | — |
| Created | Apr 29, 2014 | Jul 4, 2025 | — |
| Genre | Survival | 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 Survive and Kill the Killers in Area 51 !!!, 13 for Build a Zoo.