From Press Release:
LONDON, U.K, 24 June 2026 — Spiderling Studios today launched The Broken Beyond, the largest and most ambitious expansion so far for its physics-building game Besiege. Available now on Steam, The Broken Beyond takes the series’ trademark catastrophe off-world for the first time, challenging players to build volatile rocketships, launch them into orbit, and wreak devastation across an entire star system.
Where the base game tasked players with constructing medieval war machines to topple castles and crush armies, The Broken Beyond asks a far more dangerous question: what happens when you bolt machines to rocket boosters and aim them at the stars? The answer, predictably, is carnage in a physics playground.
Mastering (and Surviving) Space Flight
At the heart of the expansion is a full simulation that pushes Besiege’s physics into mind-bending new territory. Every large object in a level – planets, moons, and sizable asteroids – generates its own gravitational field, letting players jump between asteroids, establish orbits, and slingshot around celestial bodies. Misjudge it, and you can shove a moon clean out of orbit or send rocks careening into one another in a chain reaction of debris.Planets are wrapped in atmospheres that bring aerodynamics into play. Wings and balloons generate lift, propellers find purchase, and grid fins and parachutes can slow a screaming atmospheric re-entry.
In true Besiege form, space flight is easy to start but challenging to master. Slap a few blocks together and you have a (badly) functioning rocket that somehow flies. Over time, learn to engineer complex vessels capable of clean takeoff, stable orbit, and controlled re-entry.
13 New Space Blocks and A Dynamic Fuel System
The Broken Beyond introduces 13 new blocks designed specifically for spaceflight, including the Blaster, a heavy weapon that fires superheated bursts of fuel. As well as the Booster for rocket propulsion, Control Thrusters and Inertial Steering for attitude control, plus Rocket Fins, Grid Fins and Parachutes for aerodynamic stability.The expansion also brings resource management to Besiege for the very first time via a new fuel system. Players must balance fuel reserves against their machine’s mass – carrying enough to feed their boosters and weapons, while staying light enough to actually leave the ground. New Fuel Barrels, Hoses, Couplers, and an automation-ready Fuel Gauge give engineers the tools to craft everything from basic rockets to advanced multi-stage launch systems.
An 11-level Campaign Spanning A Fractured Star System
The Broken Beyond features a brand-new 11-level campaign that carries players from familiar ground to the far reaches of space. It opens with a blast-off from Ipsilion – the original island where Besiege began – before escalating into ever more outlandish set-pieces: laying siege to a fortress perched atop a drifting asteroid, racing through canyons on a tiny desert planet, and battling against swarms of alien spacecraft.The campaign’s centrepiece is exactly the kind of spectacle Besiege fans live for: the chance to destroy an entire planet by hurling an iron moon into it.
An Interplanetary Sandbox and A Multiplayer Level Editor for Space Carnage
Beyond the campaign, The Broken Beyond adds a vast new cosmic sandbox of planets, moons and structures to destroy.The expansion also extends Besiege’s powerful level editor into space, with planets, enemies, gravitational fields, and more to build with – all playable in Besiege’s multiplayer environment alongside friends.
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“The Broken Beyond is Besiege’s largest expansion to date, with loads of new blocks, levels, and physics mechanics to play around with!” says Toby Hawkins, producer for the project. “Space felt like the next logical environment to explore following The Splintered Sea expansion, and we’re nerds, so we had a lot of fun with the new physics possibilities,” he continues. “Some people may question the logic behind a medieval space program, but those people have clearly never played Besiege…”. “Our community is crazy creative, and we can’t wait to see what epic machines they’ll make with all this new content!”Availability
Besiege: The Broken Beyond is available now on Steam (PC, macOS, and Linux), priced at $8.99 USD. It requires the base game, Besiege, which has earned an “Overwhelmingly Positive” rating from more than 47,000 Steam reviews. A Midweek Deal is running on Steam alongside the release of the base game at a 90% discount.Aspiring inventors new to Besiege can purchase the Spacefarer Edition bundle for both the base game and expansion. The Mad Engineer Edition bundle will also be available for fans eager to support Spiderling Studios, featuring a master album of the game’s OST and an in-game animated cube skin in addition to the base game and both expansions. Keep up with Spiderling Studios and all things Besiege on X, YouTube, Twitch, and Discord.
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About Besiege
Besiege is a physics-based game about constructing medieval machines to annihilate armies, obliterate castles and overcome challenging obstacles. Players build siege engines, battering rams, ballistas and anything else they can imagine using an intuitive, flexible building system, then unleash them in a campaign, in vast sandbox levels or in online multiplayer. Backed by an active modding community and over 200,000 community-made machines on the Steam Workshop, Besiege launched in 2020 and remains one of the most beloved physics sandboxes on the platform.About Spiderling Studios
Spiderling Studios is the independent UK developer and publisher behind Besiege. The studio is known for its deeply simulated, endlessly creative approach to physics-based building games, and for a community that turns its tools into things its creators never imagined.
