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Skull Siege
1 knight, 30,000 skeletons. Build a tiny kingdom by day: drop gold coins into houses, towers and traps. By night a river of bones pours through the gap. Ride into it with your spear, charge through hundreds at once and hold the keep until the sun burns the rest to dust.

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Features
Languages:
Interface Full Audio Subtitles
English ✔
Simplified Chinese ✔ ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Skull Siege is complete from start to finish: six islands of five to seven nights, Endless Night and the Giant. We want players to shape the horde, the difficulty and what comes next while we build the rest, instead of guessing alone.”

Approximately how long will this game be in Early Access?

“We plan to be in Early Access for about 6 to 12 months, depending on what players ask for.”

How is the full version planned to differ from the Early Access version?

“We plan to add more islands, more hero weapons, more kinds of dead and more languages. Each addition has to earn its place in play, so the list may change.”

What is the current state of the Early Access version?

“Playable from start to finish: six islands (The Gap, Two Gaps, The Shore, Poor Year, Open Field and The Long Night), each unlocked by winning the one before, with five to seven nights each; Endless Night, where every night is bigger until the keep falls; the Giant, made of 2,500 skeletons; seven kinds of dead; houses, fields, walls, crossbows and cannons with three upgrade paths each, and the moat; the knight's Charge, the sunrise and a pick every dawn. A five-night island takes about 15 to 25 minutes. English and Simplified Chinese.”

Will the game be priced differently during and after Early Access?

“We plan to raise the price as major content arrives, so the Early Access price is planned to be the lowest. Everyone who buys during Early Access keeps the game and every update at no extra cost.”

How are you planning on involving the Community in your development process?

“We read the Steam forums and reviews. Balance, difficulty and which content comes first will be shaped by what players tell us there, with updates and patch notes posted as Steam announcements.”
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About This Game

1 knight. 30,000 skeletons. One night at a time.

By day, Skull Siege is calm. You ride a small knight around an island kingdom and drop gold coins into fixed build slots: houses, fields, towers, walls, a moat. Hold a button at a slot to pay. That's the whole build menu.

At dusk the dead rise from the grave fields. Night one brings two thousand rattling skeletons with ember eyes. Night five brings thirty thousand, pouring through the gap in the ridge toward your keep.

Hold the line

You don't command an army. You are the last rider. Your spear strikes on its own; you choose where to ride. Run to trample a path, then Charge and break a whole line of skeletons at once. Your towers rake the pile at the gap, cannons blow up the thick of it and the moat slows it. Hold out until sunrise, when the rising sun closes in on the keep and burns the stragglers to dust.

Features

  • A real horde. Over ten thousand skeletons on screen at once, moving as one crowd: they pile up at the gap, part around your horse and spill over the moat.
  • Be the knight. A spear that strikes by itself, a run that tramples, and a Charge that breaks hundreds of skeletons in two seconds.
  • Build simply. One currency and fixed slots. Two tower kinds, the Crossbow and the Cannon, each with three upgrade paths: buy into two, take one all the way.
  • Cannons. A bomb blows up the moment it lands in the thickest part of the crowd. Take its Blast path and it lays a line of blasts down the lane.
  • A choice every dawn. A perk, a one-night blessing, or a risky deal: double gold for a double horde.
  • Seven kinds of dead. Skeletons flood the keep, Runners rush it, Flyers fly over the walls at your towers and houses, Brutes smash towers, Bone Knights shrug off your spear, Flag Bearers hurry the crowd and Catapults throw rocks from far away.
  • Starts at the peak. Your first launch drops you into the last night of a finished kingdom, two seconds after you press Play.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

The in-game card art (the icons and card faces on the level-up, dawn, weapon and evolution cards) was created with an AI image generator in our own palette and edited by us; every word and number on the cards is drawn by the game's code. No AI-generated audio, music or voice: every sound is a real human recording. The game's code, including the code that builds its simple 3D shapes procedurally, was written with an AI coding assistant under the developer's direction. Store artwork (capsules, key art) was created with an AI image generator from our in-game screenshots and edited by us. Nothing is generated by AI while you play.

System Requirements

Windows
macOS
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit or later
    • Processor: 64-bit (x86-64) processor
    • Memory: 4 GB RAM
    • Graphics: GPU with Vulkan or Direct3D 12 support
    • Storage: 500 MB available space
    • Additional Notes: Preliminary: Windows requirements will be confirmed by testing before the demo. The skeleton horde runs on the GPU; the game picks a quality tier on first launch.
    Recommended:
    • Requires a 64-bit processor and operating system
    Minimum:
    • OS: macOS 11 Big Sur or later
    • Processor: Apple Silicon (M1 or later)
    • Memory: 8 GB RAM
    • Graphics: Apple Silicon GPU (Metal)
    • Storage: 500 MB available space
    • Additional Notes: Tested on an Apple M4 MacBook Air: 30,000 skeletons at 1080p above 60 fps on the High tier. Intel Macs are not supported yet.
    Recommended:
    • OS: macOS 26
    • Processor: Apple M4
    • Memory: 8 GB RAM
    • Graphics: Apple M4 10-core GPU
    • Storage: 500 MB available space