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Rex is a classic hardcore 2D platformer shooter, you play as a soldier to hunt down an evil scientist. Fight your way through with powerful weapons and put an end to his mad experiments.

Player counts over time, as we observed them.
Source: Steam Web API, ISteamUserStats/GetNumberOfCurrentPlayers. Full methodology
| Month | Average | Change | Change % | Peak |
|---|---|---|---|---|
| October 2026Oct 2026 (from 19 Oct) | 0 | — | — | 1 |
Average and peak concurrent players each month, and the change in average players from the month before.