An online co-op action RPG for up to 8 players. Raid fully physics-based gigantic beasts, climb onto them to smash their heads, and experience full-physics intense next-gen action battles with your party.

Beast Siege is an online co-op game where ordinary warriors take on colossal Beasts. In a medieval fantasy world without magic, they rely on gunpowder technology for explosive recoil jumps, gunpowder-powered hammer strikes, and more.Experience the next generation of gaming with fully physics-driven interactive combat and seamless network synchronization.Every movement of the gigantic Beasts reacts to player actions through real-time physics interactions, allowing them to overcome obstacles naturally and create lifelike motion never seen before in any game.<h2 class="bb_tag" >Climb the Colossal Beast and Smash Its Head!</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/b9fc4372f6ca6c4f346c986dd36dc07f.poster.avif?t=1743602461" width=600 height=240 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/b9fc4372f6ca6c4f346c986dd36dc07f.webm?t=1743602461" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/b9fc4372f6ca6c4f346c986dd36dc07f.mp4?t=1743602461" type="video/mp4"></video>Climb up the giant beast by stepping on its legs.Use the explosive recoil from your hammer to launch yourself into the air and land a powerful blow to its head.<h2 class="bb_tag" >True Physics, Real Reactions</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/896b7c09aeb2eca3f87b52349cff2af0.poster.avif?t=1743602461" width=600 height=240 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/896b7c09aeb2eca3f87b52349cff2af0.webm?t=1743602461" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/896b7c09aeb2eca3f87b52349cff2af0.mp4?t=1743602461" type="video/mp4"></video>Right cheek. Chin. Left cheek.Each strike sends the beast’s head snapping to the side.This isn’t an animation. It’s real physics, in real time.<h2 class="bb_tag" >One Devastating Blow — Can You Handle It?</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/6f6eefd3f1bbe7bef15489c6ea3c55d7.poster.avif?t=1743602461" width=600 height=240 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/6f6eefd3f1bbe7bef15489c6ea3c55d7.webm?t=1743602461" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/6f6eefd3f1bbe7bef15489c6ea3c55d7.mp4?t=1743602461" type="video/mp4"></video>One swing of the beast’s tail is all it takes.Get hit, and you’re sent flying—no time to react.Dodge early, or block with everything you've got.<h2 class="bb_tag" >You Can Stop It—If You Work Together!</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/cb8c8cd8da5c5d31e618ee1e56a351c4.poster.avif?t=1743602461" width=600 height=240 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/cb8c8cd8da5c5d31e618ee1e56a351c4.webm?t=1743602461" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/cb8c8cd8da5c5d31e618ee1e56a351c4.mp4?t=1743602461" type="video/mp4"></video>With enough hands, you can pin the beast down using harpoons.But it won’t last long. Finish the job before they snap!<h2 class="bb_tag" >The Moment the Beast's Leg Is Trapped</h2><video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/8abb0a5281ca47c8f1743b8ff4eb71a6.poster.avif?t=1743602461" width=600 height=240 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/8abb0a5281ca47c8f1743b8ff4eb71a6.webm?t=1743602461" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3576380/extras/8abb0a5281ca47c8f1743b8ff4eb71a6.mp4?t=1743602461" type="video/mp4"></video>Once the beast is caught in a trap, it can no longer use that leg properly.But it won’t last long—finish the fight before the trap breaks!Enjoy all this incredible gameplay in online co-op!Support us by adding to your wishlist and following the game!

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Beast Siege Achievements