| Rank | Title | Release Year | Country of Origin | Free-to-Play |
|---|---|---|---|---|
| 1 | Roblox | 2006 | US | Yes |
| 2 | Counter-Strike 2 | 2023 | US | Yes |
| 3 | League of Legends | 2009 | US | Yes |
| 4 | Minecraft | 2011 | Sweden | In China |
| 5 | Fortnite | 2017 | US | For modes other than Save the World |
| 6 | Dota 2 | 2013 | US | Yes |
| 7 | Valorant | 2020 | US | Yes |
| 8 | World of Warcraft | 2004 | US | No |
| 9 | The Sims 4 | 2014 | US | No |
| 10 | Call of Duty: Black Ops 7 | 2025 | US | No |
| 11 | Escape from Tarkov | 2025 | Russia | No |
| 12 | Overwatch 2 | 2023 | US | Yes |
| 13 | Marvel Rivals | 2024 | China | Yes |
| 14 | PUBG: Battlegrounds | 2017 | South Korea | Yes |
| 15 | World of Warcraft Classic | 2019 | US | No |
| 16 | Grand Theft Auto V | 2013 | UK | No |
| 17 | Diablo IV | 2023 | US | No |
| 18 | Wuthering Waves | 2024 | China | Yes |
| 19 | Genshin Impact | 2020 | China | Yes |
| 20 | Apex Legends | 2019 | US | Yes |
I think that a bigger story there is the dominance of F2P games.
EDIT: Added release year after @Quetzalcutlass@lemmy.world mentioned age.
EDIT2: And country of origin, while I'm at it.
EDIT3: Note that the release dates on some of these are a bit apples-to-oranges. For example, Escape From Tarkov only had its 1.0 release in 2025, but had been widely-played well before that, so maybe "availability" would be more interesting than "release". World of Warcraft Classic only split from World of Warcraft in 2019, but both games have an origin in World of Warcraft, which was released in 2004.