Steam Summer Sale 2025 is here, and it’s one of the best times to get video games online at discounted prices. During this seasonal sale, heavy discounts are expected on various games from different genres, so gear up, because the best is yet to come.
The current Steam Summer Sale kicked off on June 26, 2025, and will end on July 10. Lasting for almost two weeks, it gives you ample time to decide what you want to buy.
7 best co-op multiplayer games that you should buy during Steam Summer Sale 2025
Most popular games among the new gen gamers are usually the multiplayer or co-op, and it makes sense as gaming is more fun when you are playing with your best friend or your squad who are always ready to go on a new adventure (virtually we meant).
So here are the seven best co-op games that you should definitely buy in the Steam Summer Sale 2025:
7) Phasmophobia
Looking for a game that will make you crawl back to your bed? Then you should definitely try out Phasmophobia. In this game, you need to visit various locations and gather paranormal activity evidence using the provided tools.
But what starts as a normal exploration suddenly turns into a chaotic situation when you realize that the spirits you are investigating are hostile and are trying to kill you. This title can be terrifying when playing alone, especially when trying the new VR feature.
You can play this game with your friends. A lot of game mechanics push for co-op play, as you and your squad will need to work together and communicate, so that you can identify the ghost type, which is the main goal for the game.
Phasmophobia is one of the best Steam co-op games, and we highly recommend it.
6) Stardew Valley
Stardew Valley is among the greatest indie video games ever made. You can play with three other players who can form a group and construct their own farm, but keep in mind that only one of the group members will be the “Owner”; the others will be cultivators.
As a result of this restriction, the other players will have to wait for the “Owner” to come online to resume their adventure, and their gaming data will be preserved in that player’s world.
Aside from this minor restriction, multiplayer offers many special features, such as the option to add more player houses on the farm land, each player can marry their own NPC, and more. Together, you and your companions can finish a variety of quests.
This is another highly recommended game that you should definitely try out.
5) Helldivers 2
Helldivers 2 is one of the best co-op games in recent years. Having a sharp narrative and representation, Helldivers 2 casts the players as soldiers who are busy saving the galaxy, one planet at a time.
You can join randoms or play with your friends, and while the latter leads to a fun experience, the former is also fine, as it leads you to make new friends from around the world. Helldivers 2 is quite addictive and fun, and as it happened, Arrowhead also crafted a brilliant third-person shooter, which is quite satisfying.
Helldivers 2 has its own ups and downs, but Arrowhead listens to its community, so adjustments are made pretty fast to keep the game balanced.
Another highly recommended co-op game on Steam, which you should try out during the Steam Summer Sale 2025.
4) Split Fiction
Split Fiction is one of the newly released co-op games that has taken the internet by storm. The story revolves around two writers who have their ideas stolen, forcing them to go on an adventure that involves visiting their own fantasy or sci-fi worlds.
The two playable characters are Zoe and Mio, who were not on great terms at the start of the story, but as it progresses, they form a bond as they are forced to co-exist, both in the story and the gameplay.
The entire story is based on co-op gameplay, and Hazelight has successfully used the co-op genre to craft a masterpiece where players will be facing challenges that can be overcome only when they communicate with their duo.
Highly recommended game, but only two players can play at a time.
3) Portal 2
If you are looking for a great puzzle game, then Portal 2 is a great option. Portal 2 has a great single-player campaign, but its solid co-op gameplay made it stand out among the others.
You and your duo will be in charge of controlling the two playable bots and will be subject to a variety of GLaDOS, which are sinister portal-based tests. This is an amazing puzzle game that makes use of Portal’s unique gameplay mechanics.
This co-op title is well planned and will force the players to work together to escape each room. Portal 2 is one amazing puzzle game that you should definitely buy during the Steam Summer Sale 2025.
2) Overcooked! 2
If you are looking for a puzzle, strategy game that also has skill-based challenges, then you should definitely check out Overcooked! 2.
The game starts as a simple cooking game, but soon it will turn into a chaotic situation where you will need strong teamwork to clear the challenges. Players will need to work together to complete the challenges while ensuring they are using the correct cooking stations to deliver hot meals to the hungry customers.
This simple cooking game can be quite challenging and fun at the same time. So enjoy while you and your friends feed the hungry customers.
1) Schedule 1
Schedule 1 is a recently launched title from TVGS, and out of nowhere, they have managed to take the community by storm. It has even managed to hit the top charts of Steam’s best-selling games, successfully establishing itself as one of the best of 2025.
Schedule 1 is a game where you build a criminal empire from the ground, and has solo mode and co-op mode. And of course, the co-op mode is more fun as it allows a maximum of four friends to build the empire from nothing and eventually make it to the big league.
While building the empire, you and your friends need to stay hidden from police and do discreet deliveries while staying hidden from law enforcement, which can be quite thrilling and challenging, making the game fun for everyone.
Currently, this is one of the best co-op games that you can purchase, so start collecting your funds because the Steam Summer Sale is just an hour away.
While you collect your money to purchase these amazing games, how about you check out our latest article on future dates of the upcoming Steam sales of 2025?
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