PC has always been the most popular platform for online games, as it has the capability to load the resource intensive Multiplayer Online Mode. In this article, we are going to showcase Online Games Ranking 2021 to find out the top 10 most played Online Games on PC. This list will be based on the average concurrent player number on Steam as of September 2021 from Statista.

most played online games 2021 on PC
Statistics show the average number of concurrent players among top 10 most popular online games for PCs.

10. Tom Clancy's Rainbow Six Siege

Number of players: 53,648

Tom Clancy's Rainbow Six Siege is an online Tactical shooter from Ubisoft with focuses on cooperation between players and environmental destruction. Each player assumes the role of either an attacker or defender in different gameplay modes such as bomb defusal, hostage extraction, objective control, and more.

Tom Clancy's Rainbow Six Siege
Tom Clancy's Rainbow Six Siege is hard to get into and master.

The game features a heavy emphasis on environmental destruction, therefore, it requires insane skill to master. From the weapons recoil, character abilities, to item usage, R6 always feels fresh with every patch/update.

9. Valheim

Number of players: 56,075

Valheim is probably the answer to the question of what is the most trending game in 2021. It is a survival and sandbox video game that takes place in a huge procedurally-generated world.

Players will explore and inhabit mystical lands, from mysterious forests to imposing snow-topped mountain ranges and stunning meadows, complete with their own creatures of legend to battle and wildlife to hunt.

Valheim's colorful world

The gameplay is pretty straightforward - it is all about exploring. Your task is to survive, explore and harvest materials to craft deadlier weapons and sturdier armor. Buildings like viking strongholds and outposts can be created with Valheim best seeds as well. Afterward, you can build a mighty longship and sail the great oceans in search of exotic lands.

8. Rust

Number of players: 67,173

Rust is yet another survival game. In this game, everything wants you to die, from the island's wildlife to other inhabitants... and even the environment. Do everything you could to survive another night.

Overall, Rust is in its 8th year and has now had over 300 content updates, with a guaranteed content patch every month. From procedurally generated worlds with map editor support to vehicles, complex electrical systems... Rust has just about everything you need for a true "Survival experience".

Rust's survival gameplay on PC.

7. Naraka Bladepoint

Number of players: 72,087

Naraka Bladepoint is a crazy "battle royale" concept in which players use martial arts instead of gun and grenades. The best part about the game is the reaction-based combat system that takes everything in the environment in mind. You can climb everything on the map, as every player is equipped with a grappling hook that can be aimed at anyone, anywhere.

60 players clash in a vertically designed map called Morus island. The game has very deep mechanics, from combos to skills and items. It can be said that Naraka Bladepoint has the most unique gameplay amongst online games ranking 2021.

Naraka Bladepoint
Naraka Bladepoint's gameplay is really fast and brutal.

6. Destiny 2

Number of players: 84,457

Destiny 2 is a free-to-play online-only multiplayer first-person shooter video game developed by Bungie. The best part of Destiny 2 is that it is not too competitive - most of the multiplayer content is co-op. It has both PVE and PVP using coop elements. PvE features three-player "strikes" and dungeons and six-player raids. PvP features objective-based modes, as well as traditional deathmatch game modes.

Players can choose from the armored Titan, mystic Warlock, or swift Hunter. Afterward, they can mix and match thousands of exotic Weapons and Armor.

Destiny 2
Destiny 2 is only available online on PC.

5. Team Fortress 2

Number of players: 84,748

Team Fortress 2 is a multiplayer first-person shooter game developed and published by Valve. Players join one of two teams, RED and BLU, and choose one of nine character classes to play as. Gamemode wise, TF2 has all the classics such as capture the flag and king of the hill.

As the game is based on a mod, there are also a lot of player-created modes and maps available, from base defense coop mode to arena. TF2 is the oldest title in the online games ranking 2021.

Team Fortress 2
Team Fortress 2 on PC

4. Apex Legends

Number of players: 134,068

Ranking number 4 among the most played online games 2021, Apex Legends is a free-to-play battle royale-hero shooter game published by EA. Players are divided into two or three-member teams and land on an island. Overall, it is the usual squad-based battle royale experience, but each character has their own special unique skill.

Overall, Apex is praised for its gameplay, progression system, and fusion of elements from various genres. However, you may encounter Apex Legends matchmaking slow problem if not updating the latest version of the game.

Apex Legends
Apex Legends could also become the most played online games 2021 mobile... if its android version was released on time.

3. PlayerUnknown's Battlegrounds

Number of players: 178,294

One of the first battle royale released on PC, PUBG is the progenitor of the genre. In this game, 100 players land onto a gigantic battlefield and fight it out until there is only one left. Players can use whatever item they managed to gather on the map, including vehicles, to follow the continuously shrinking safe zone.

Realism is one of the most important aspects of PUBG. It is the reason why the game has so much staying power, 4 years after its initial release. PUBG is actually one of the few titles that placed high in online games ranking 2021 for both Android and PC.

In fact, PUBG Mobile is leading the top mobile games ranking 2021 with the highest revenue in the first 9 months of the year.

PUBG and PUBG Mobile are both leading the chart of online games ranking for PC and mobile devices.

2. Dota 2

Number of players: 400,861

Dota 2 is one of the top online games 2021 PC. It is a multiplayer online battle arena (MOBA) video game developed and published by Valve. It was based on a mod of Warcraft 3. In this game, 2 teams of 5 players battle each other to destroy their enemies' home base (ancient).

Each player controls a "hero", a special unit with 4 or more abilities. They then divided into 3 lanes and battle each other while building items, skills and levels. Dota 2 is considered one of the games with the highest skill-ceiling ever created, as there are currently 121 heroes with different abilities.

Dota 2
Dota 2 would be among the best free online games 2021 if you enjoy MOBA.

1. Counter-Strike Global Offensive

Number of players: 557,641

Counter-Strike: Global Offensive (CS:GO) is a multiplayer first-person shooter developed by Valve. It is based on the legendary CS mod Counter Strike of Half Life. You can play CS:GO on Mac or PC as long as your devices meet its system requirement. The game pits two teams, Terrorists and Counter-Terrorists, against each other in different objective-based game modes.

Out of the nine official game modes, the most common game mode is bomb defusal. It involves the counter-terrorists trying to stop the terrorists from planting a bomb on a site.

Counter-Strike Global Offensive is also one of the most popular Esports games in the world, amongst all online games ranking 2021. In 2020, the estimated prize money for CS:GO tournaments stood at 15.85 million U.S. dollars, making it the online game with the highest cumulative prize pool in that year.

Counter Strike global Offensive
Overall, CSGO is the most played game in the world 2021 on PC.

>>> Related post: Top 10 Games In The World 2021 By The Number Of Players