Live Steam player count comparison, updated every 10 minutes. Both are RPG games.
Fallout 4 is currently the more played game: 12,515 concurrent players on Steam right now vs 3,302 for Undertale — about 4× more players. Undertale counters with better Steam reviews: 96% positive vs 81%. Across all tracked metrics, Fallout 4 leads 7 of 9.
Coilr tracks charts like this for every game — and playtime history for your own library.
Tracked by Coilr since April 2026 · Steam polled every 10 minutes · methodology
| Metric | Fallout 4 | Undertale |
|---|---|---|
| Players right now | 12,515 | 3,302 |
| 24-hour peak | 13,472 | 3,644 |
| 7-day average | 11,141 | 2,843 |
| 30-day average | 10,696 | 2,374 |
| 30-day trend | +3% | — |
| Peak (tracked) | 17,301 | 3,957 |
| Steam reviews | 81% positive | 96% positive |
| Recent reviews (3 mo) | 83% positive | 96% positive |
| Total reviews | 426,266 | 330,258 |
| Owners (SteamSpy est.) | ~10,000,000 | ~5,000,000 |
| Release date | Nov 8, 2015 | Sep 14, 2015 |
| Price | $19.99 | $9.99 |
Full stats: Fallout 4 · Undertale · add more games to this comparison →
| Month | Fallout 4 | Undertale | ||
|---|---|---|---|---|
| Avg | Peak | Avg | Peak | |
| Apr 2026 | 11,732 | 13,926 | 1,028 | 1,458 |
| May 2026 | 10,898 | 14,354 | 951 | 1,373 |
| Jun 2026 | 10,322 | 16,143 | 1,945 | 3,530 |
| Jul 2026 (so far) | 11,086 | 17,301 | 2,799 | 3,957 |
Monthly average and peak concurrent players on Steam, from Coilr's own tracking (10-minute polls, hourly beyond 30 days).
Fallout 4 currently has more players: 12,515 concurrent players on Steam vs 3,302 for Undertale — about 4× more players.
Over the last 30 days Fallout 4 averaged 10,696 concurrent players and Undertale averaged 2,374. By that measure Fallout 4 is currently the bigger game.
By Steam review score, Undertale rates higher: 96% positive across 330,258 reviews vs 81% across 426,266 for Fallout 4. Fallout 4 has the larger player base right now (12,515 vs 3,302 concurrent). Player counts, ratings, price and trend are compared side by side above.
Fallout 4 averaged 10,696 concurrent players over the last 30 days, up 3% vs the previous 30 days. Its highest tracked player count is 17,301.