1- Fireboy and Watergirl: This is a cooperative platform game in which two players control Fireboy and Watergirl and work together to solve puzzles and reach the end of each level.
2- Tank Trouble: This is a multiplayer tank game in which players control tanks and try to eliminate their opponents while avoiding being hit themselves.
3- Chess: This classic strategy game can be played online with a friend.
4- G-Switch 3: This is a multiplayer running game in which players control characters who run through an obstacle-filled environment and try to outrun their opponents.
5- Skribbl.io: This is a multiplayer drawing and guessing game in which players take turns drawing and guessing words.
6- Dots and Boxes: This is a simple strategy game that can be played with a friend. The objective is to surround more squares than your opponent.
7- Bloons Tower Defense: This is a tower defense game in which players work together to stop waves of balloons from reaching the end of the path.
8- Basketball Legends: This is a multiplayer basketball game in which players can play as some of the greatest basketball players of all time.
9- Checkers: This classic board game can be played online with a friend.
10-Worms.zone: This is a multiplayer worm game in which players control worms and try to eliminate their opponents while growing as long as possible.
11- Connect Four: This is a classic strategy game in which players take turns dropping colored disks into a vertical grid, trying to connect four of their own color in a row.
12- Agar.io: This is a multiplayer game in which players control cells and try to eat other cells to grow as large as possible.
13- Shell Shockers: This is a multiplayer egg-based shooting game in which players control egg characters and try to eliminate their opponents.
14- Slither.io: This is a multiplayer snake game in which players control snakes and try to eliminate their opponents while growing as long as possible
15- The 1v1.LOL: This is a multiplayer building and shooting game in which players can build structures and fight against each other.
16- Bad Ice-Cream: This is a multiplayer arcade game in which players control ice cream characters and try to collect fruit while avoiding enemies.
17- Tron: This is a multiplayer snake game in which players control light cycles and try to eliminate their opponents while avoiding running into walls.
18- Soccer Physics: This is a multiplayer soccer game that is based on wacky physics and features fast-paced and unpredictable gameplay.
19- Boxhead: This is a multiplayer zombie shooting game in which players work together to defeat waves of zombies.
20- The Gun Game: This is a multiplayer shooting game in which players work their way through a variety of weapons, trying to eliminate their opponents as quickly as possible.
These games provide endless hours of fun and can be played with friends online, making them a great option for those looking for unblocked two-player games.