Forza Horizon 6 is the new name cutting into Steam's weekly most-played chart, but Subnautica 2 is still the game keeping the upper table from turning into another routine week for PC's usual giants.
According to Steam's public most-played chart for the weekly data dated May 18, 2026, Counter-Strike 2, PUBG: BATTLEGROUNDS and Dota 2 are unchanged at the top. The movement starts below them: Subnautica 2 holds at No. 5, Forza Horizon 6 enters at No. 13 and Marvel Rivals climbs back into the top 10.
Steam's most-played games for the week of May 18
This table focuses on games, so Steam software and utility entries are not counted in the game-focused top 10.
| Steam rank | Game | Last week | Change | Weekly peak players |
|---|---|---|---|---|
| 1 | Counter-Strike 2 | 1 | 0 | 1,313,208 |
| 2 | PUBG: BATTLEGROUNDS | 2 | 0 | 769,347 |
| 3 | Dota 2 | 3 | 0 | 559,307 |
| 5 | Subnautica 2 | New | New | 213,101 |
| 6 | Apex Legends | 5 | -1 | 268,767 |
| 7 | Slay the Spire 2 | 6 | -1 | 175,902 |
| 8 | Grand Theft Auto V Legacy | 8 | 0 | 79,996 |
| 10 | Marvel Rivals | 16 | +6 | 112,264 |
| 11 | R.E.P.O. | 7 | -4 | 73,219 |
| 12 | Geometry Dash | 10 | -2 | 68,499 |
The top three are familiar enough to group together. Counter-Strike 2 is still far ahead of the field, PUBG keeps its huge battle royale audience and Dota 2 remains Steam's other permanent esports fixture. Subnautica 2 is the stronger story near the front, because it is still above Apex Legends and Slay the Spire 2 after last week's launch spike cooled.
Forza gives the week its biggest new arrival
Forza Horizon 6 landed at No. 13 with a 148,585-player weekly peak, making it the chart's most important new entry outside the top 10. That fits the game's launch-week profile rather than a quiet catalogue bump. Gamers Now already tracked Forza Horizon 6 hitting Steam's top 15 after full launch, and the weekly chart now shows that surge carrying into Steam's broader most-played list.
The racing sequel is also the kind of paid PC release that stands out on this chart. It is not sitting above the free-to-play giants, but opening just below the game-focused top 10 puts it ahead of long-running Steam fixtures such as Monster Hunter Wilds, Warframe and Grand Theft Auto V Enhanced this week. Its Steam store page pitches the new entry around Japan, Tokyo, more than 550 real-world cars and a campaign that can be played solo or in co-op.
Subnautica 2's hold is still important. The sequel's weekly peak fell from the launch-week number Gamers Now covered in last week's Steam chart, but 213,101 weekly peak players is still enough to keep it at No. 5. Steam's store page describes it as an early access underwater survival game with solo play, four-player co-op, new biomes, creatures and craftables planned across future updates.
The original Subnautica supplied the chart's biggest riser by rank, jumping 64 places to No. 33 with a 39,939-player weekly peak. That is the sequel effect showing up lower down the top 100: players are not only trying the new early access game, they are also returning to the 2018 survival hit around the same window.
Marvel Rivals returns while R.E.P.O. slips out
Marvel Rivals moved from No. 16 to No. 10 with a 112,264-player weekly peak. The climb lines up with a busy live-service week: the official May 21 Marvel Rivals patch notes added the Savage Adventure event, free Ultron cosmetic rewards and new store bundles. That does not make the patch the only reason for the rise, but it gives the hero shooter a clear reason to have players checking back in.
R.E.P.O. and Geometry Dash are the two notable games pushed out of the top 10 by Steam's own previous-week ranks. R.E.P.O. dropped to No. 11 with a 73,219-player weekly peak after spending the last chart window inside the upper group, while Geometry Dash slipped to No. 12. Neither has disappeared from the upper chart, but both lost ground as Forza Horizon 6 and Marvel Rivals took the fresher attention.
The biggest fallers were lower down the top 100. Far Far West fell 31 places to No. 78, Gamble With Your Friends dropped 27 places to No. 70 and Heroes of Might and Magic: Olden Era slid 25 places to No. 75. Those look more like post-launch cooling than a single shared trend, so the sharper read this week is near the upper middle of the chart: Subnautica 2 is holding better than a normal launch-week novelty, Forza Horizon 6 has arrived with real PC weight and Marvel Rivals has enough live-service momentum to climb back into the top 10.