オンラインでみんなと遊べるアクション（2D）ゲーム841本。Windowkill、Gal Guardians: Servants of the Dark、Risk of Rain Returnsなど。
すべてのゲーム: 24
Windowkill is a twin-stick shooter, but the game window itself is constantly closing in on you. Shoot the window edges to push it around your screen as you fight and dodge enemies and bosses in their own windows.
Take control of the demon sisters Kirika and Masha as they attempt to revive their Demon Lord Maxim and rebuild their castle in this 2D action Metroidvania adventure!
Carefully designed, beautifully remastered, and loaded with new ways to play—Risk of Rain is back and better than ever! Dive into the iconic roguelike full of unique loot combinations, enhanced with new Survivors, overhauled multiplayer, fan favorite content from Risk of Rain 2, and more!
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
Take control of an assortment of superb mechs and engage in thrilling combat with other enthusiasts on the same battlefield! In addition to original mecha, well-known IPs such as "Mazinger Z" and “Dancouga – Super Beast Machine God” also ready for the mecha war!
Enter the world of The Eminence in Shadow: Master of Garden, a multiplayer, narrative driven, action-RPG where players form their own party from a deep roster of unique characters, voiced by the actors from the anime, and engage in new stories, to take down the world-threatening Cult of Diabolos.
A colorful cast of pixel-art Umamusume are all in line and ready to compete in the Slapdash Grand Prix, a school festival featuring four zany events! Which team will run, shoot, and eat their way to gold and glory?
Abathor is a challenging 2D action platformer for solo play or up to 4 players. Embark on an epic 16-bit quest inspired by Golden Axe, Rastan, and Castlevania IV. Traverse Atlantis, battle demons, and defeat vicious bosses to save your progress! Enjoy an amazing OST from classic-era musicians!
College Bowl is a beautifully pixelated on-field simulation of American Football! Challenge college rivals on your way to winning a National title! Take on various game modes, including a deep Dynasty mode with in-depth recruiting, scouting, stat tracking, ranking, bowl games, yearly goals and more!
TDP4 Team Battle is a real-time multiplayer 2D shooter game with MMORPG elements. The bloody battle for survival among 3 races. There are various types of matches, locations and types of guns. Developed Clan and Tournament system. Test your skills against real enemies!
Build a deck and battle online in real-time action with rollback netcode!
The legendary Contra series returns! This reimagining of the classic run-'n'-gun action game from the ‘80s features new stages, new enemies, new play mechanics, and co-op combat for up to 4 players!
A team based PVP game where groups of up to 8 players must work together to operate a tank!
Fight your way through endless waves of holoX's minions! Gear up with all sorts of equipment and items in this action packed beat-em-up to reach the 5 bosses of hololive's "holoX", and put a stop to their plans!
Ember Knights is an action rogue-lite for 1-4 players where you play as legendary knights, the last spark of hope against the mad sorcerer Praxis and his hordes of unwavering fiends. Wield weapons & skills, build synergies with game-changing relics and free the universe of Praxis’ corruption.
Rabbit Hole is a fast paced, tough-as-nails 2D RogueLike-Shooter, made with love for the genre. You are Disc, someone who was suddenly brought to the Rabbit Hole. Collect guns, fight foes and meet strange new characters on your descent to the bottom, all in an attempt to find your heart again.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
Every strike is lethal in this blood-soaked sword fighting game. Slash, clash, parry, dodge and watch limbs fly. Choose your move carefully - the first cut is also the last.
The Trine series is back with its biggest adventure! In their fifth outing, the Heroes of Trine are pitted against dastardly and duplicitous villains, who will stop at nothing to seize control of the kingdom. The clock is ticking to save the world of Trine!
BOKURA is a two-player puzzle adventure game. Play as two boys who ran away from their homes and work together to take yourselves somewhere far, far away. Relive the friendship of your childhood through the journey of two boys.
Hack-n-slash your way through the evil brewing in the Outer Realm! Stop the ominous Overlords in their tracks, but tread lightly, for every corner hosts a monster in waiting!
Experience the award-winning space saga. Travel to hyperspace, discover alien worlds, and meet an eclectic cast of characters. Find out what happened after the Ur-Quan invasion. And if the war still rages, fight for Earth and the Alliance of Free Stars!
Starward is a 3D fighting game that integrates mecha girls and classic GVG combat gameplay, with 1V1 and 2V2 mode as the core gameplay.
SNK and CAPCOM legends clash in this star-studded crossover fighting game! The 2003 arcade hit SVC CHAOS is back and better than ever!