Co-op

A legendary golden age flight sim. The perfect balance between realism and arcade with retro glidecore graphics.

There's trouble once again in River City, and this time only the girls can save the day! Using a variety of attacks, weapons, and items, these hot-blooded heroines are ready to teach the city’s lowlifes a lesson - either solo or in 2-player co-op! It’s an old-school rumble for a new generation!

"Ninja JaJaMaru : The Great Yokai Battle + Hell" est un jeu d'action en 2D. Il s'agit de la dernière interaction de la série Ninja JaJaMaru qui introduit de nouveaux contrôles et de nouvelles mécaniques de jeu dans la série.

Mushroom Simulator Co-op is a "cozy" co-op game where you grow by using your own voice, hide from mushroom hunters, protect your little mushrooms, and try to survive in the forest with your friends. Yes, you're literally a mushroom.

Take over the gas station and convenience store at a roadside rest area and expand by purchasing new businesses. Manage a living world shaped by dynamic economy and random events. Upgrade your facilities, satisfy your customers, and play solo or with friends.

Fight solo or up to 4-player co-op to reclaim your island alongside your Scottish battalion. On each campaign, gain new powerful upgrades, rally your forces, and stop the invader as they carve into the Mother Stone to harvest its power.

Ratatan is a rhythm roguelike action game that combines rhythm games and side-scrolling action, with online co-op gameplay supporting up to 4 players. An intense battle unfolds with over 100 characters fighting in a massive melee. Let's defeat the enemies together!

Control characters from the Touhou Project series in this shooting action game featuring high-speed aerial versus combat! Danmaku battles faster than you've ever seen will unfold in the skies of Gensokyo as you use your mobility to dodge countless bullets flying at you with a variety of spells.

Set sail for 17th-century British Colonial Mars in Jamestown+: a cooperative shoot-em-up for 1-4 brave souls, designed to be exciting for players of all skill levels.

Inspired by the classic arcade Lunar Lander game, in Galactic Lander you control a delicate scientific spaceship which you must deliver from point A to point B, either alone, or with a friend in a co-op level, potentially made by the game's own Steam Workshop community!

Bullet Hell Insanity + Tower Defense Strategy. Rogue Star Rescue is a quirky new type of rogue-like shooter. Blast your way through diverse planets while rescuing your teammates and gathering traps for your defense strategy. Play solo or online to stop the Rogue Star before it annihilates everything!

A retro spy FPS inspired by the N64 era. Go guns-blazing in action-packed shootouts, steal secret plans, and accomplish objectives while foiling evildoers’ schemes as a secret agent in a solo or co-op campaign. Fight friends in both local split-screen multiplayer and online with up to 8 opponents.