オンラインでみんなと遊べるアクション（Singleplayer）ゲーム1,889本。Pass the Fear、Diablo II: Resurrected – Infernal Edition、Anime Shop Simulator ✨など。
すべてのゲーム: 24
PASS THE FEAR is a roguelite bullet-hell shooter. A catastrophic Witch’s Disaster strikes without warning, and chaotic magic forms the ancient Wall of Storms. Its corruption spreads relentlessly across the island. As a demon hunter trapped within, you must find a way to escape before dawn breaks.
Rediscover the dark fantasy classic that defined the modern ARPG genre; fully remastered with a new class, fresh content, quality‑of‑life upgrades, and an overhauled endgame. Chain brutal skill and item synergies, rise in power, and carve through Hell’s armies with up to eight players.
Manage your own anime shop 🎌. Play solo or team up with friends 🤝 in 4-player co-op mode to grow your business 📈 Stock shelves with manga, figures, and collectible cards in this immersive first-person game 🕹️.
Help Fireboy and Watergirl explore the Forest Temple, the first game in the series. Play solo or team up with a friend locally or via Steam's Remote Play Together!
Run your sporting goods shop. Sign contracts with leading brands, order products, hire workers, expand your store, and run little contests to entertain your customers. Play with friends or go solo, and enjoy the growth of your shop.
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.
Step back into Andy’s room with Woody, Buzz Lightyear, and more classic characters in Toy Story: Retro Roundup! This five-game collection features four Toy Story titles and A Bug’s Life. All the games have been upgraded with quality-of-life improvements and behind-the-scenes content.
The Mega Man Star Force series, which expanded into an anime, is back in the Mega Man Star Force Legacy Collection! This collection includes seven games and additional features like a gallery of illustrations and music! Online play is also supported!
Moss: The Forgotten Relic is an emotional and atmospheric adventure set in the pages of a living storybook, brimming with myth and ancient magic. Guide a tiny but determined hero on a heartfelt journey of challenge, courage, and connection.
Astro Colony throws you into an endless Universe of exploration, automation and survival! Build interconnected colonies, alone or with friends, and turn planets into thriving industrial hubs! Design conveyor systems and take care of your Astronauts as you expand your intergalactic empire!
A shooting dopamine machine! Lucky Shot is a roguelike mag-builder FPS where you master different weapons, build wild combos, and break the game to reach massive high scores.
最大4人のフレンドとオープンワールドを探索し、ボス戦や一部のグループチャレンジに挑めます。メインストーリーはソロ向けなので、共有できる冒険には明確な範囲があります。
Serpent’s Gaze is a punishing 1-4 player co-op third-person action game where you fight tough enemies and relentless bosses, all while uncovering the secrets of an ancient desert.
SiN: Reloaded is a completely remastered experience of the 1998 shooter. This diamond-in-the-rough, story-driven FPS features memorable characters, horrific enemies, and a devastating arsenal that pushed the Quake II Engine to its limits. Now with remastered graphics and overhauled control schemes.
GERONIMO is an immersive, tactical CQB shooter built for Virtual Reality that depicts a modern-day world in which Tier 1 operators are called to implement unconventional operations as members of elite teams. Breaching, in-depth character and weapon customization and more! "Who Dares, Wins"
Escape the Backrooms is a 1-4 player co-op horror exploration game. Traverse 30+ eerie backrooms levels while avoiding entities and other dangers. Try to escape but be warned: survival isn't guaranteed.
Relic Arena is an 8-player free-to-play autobattler. Equip heroes with relics and build game-breaking combos, led by legendary historical figures.
An anime-style 3rd-person action, looter and modern warfare shooter that can be played solo or in two-player co-op. A sequel based the events of Banzai Escape 2. You control an elite clone sister fighting through chaotic underground tunnels against factions like pirates and military corporations
Save patients with your rhythm mastery! Rhythm Doctor is a rhythm game where you heal patients by defibrillating in time to their heartbeats. Learn each patient's unique heartbeat and defeat boss viruses trying to sabotage your rhythm, all set to heart-pumping, soul-soothing music.
FISH is a Platformer Run & Gun Shooter where you play as an armed FISH violently exploring through multiple levels. The game features a funny, unique stylized artstyle that could get a chuckle out of you!
A co-op adventure about driving your Recreational Vehicle home.
From commanding the battle standing on the bridge of your flagship all the way down to tactical infantry firefights - AFF brings together all the combat you ever loved in a rich science fiction setting. Boarding, pilotable capital ships, deep weapon customization and full Bot support included!
Glory to the Heroes set in the Russian-Ukrainian war is an immersive PvPvE mil-sim providing perspective on the modern warfare with combined-arms combat and extensive elements of survival and immersion, where the action is happening in the accurately recreated real-world locations of actual battles
Into the Radius 2 is an immersive VR survival shooter, set in a realm of surreal landscapes and deadly entities known as Pechorsk Anomaly. Arm yourself with realistic weapons and venture deeper into the mysteries within. Featuring co‑op for up to four players.