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Planetary Zigma
A co-op roguelike shooter set on procedurally generated planets. Loot chests, stack items for epic builds, charge the teleporter, and defeat the boss before the planet beats you. Then take the portal to the next planet and do it all again, harder. Play alone or with friends.

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Features
Single-player
Online Co-op
Family Sharing
Profile Features Limited 
Languages:
Interface Full Audio Subtitles
English ✔
Content
Includes Interactive Elements

Online interactivity

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About This Game

FIGHT ON REAL SPHERICAL PLANETS

Each run creates a larger planet than the last. Enemies approach from all sides as the battle spans the entire sphere. There are no map borders, only terrain and the enemies beyond it.

STACK ITEMS

Open chests, grab items, and combine their effects. You can trigger chain lightning or gain powerful stat boosts. Every copy of an item makes it stronger. You will need this power because the planets only get harder.

CHARGE THE TELEPORTER

Find the teleporter and activate it. Doing so wakes up the boss. Kill the boss and charge the teleporter. Take the portal to the next planet, where everything hits harder.

PLAY SOLO OR CO-OP

Take on the planets alone or with friends in online co-op over Steam.

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Quad-core, 2.5 GHz (Intel Core i5-6600 / AMD Ryzen 3 1200)
    • Memory: 4096 MB RAM
    • Graphics: Vulkan 1.3 GPU with up-to-date drivers (NVIDIA GTX 1650 / AMD RX 5500 XT / Intel Arc A380). Requires VK_EXT_shader_object and VK_EXT_descriptor_buffer — NVIDIA driver 535+, AMD Adrenalin 23.7+.
    • Network: Broadband Internet connection
    • Storage: 1000 MB available space
    • Sound Card: any
    • Additional Notes: Online co-op requires Steam running. Vulkan only — no DirectX fallback.
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 64-bit
    • Processor: Six-core, 3.5 GHz (Intel Core i5-12400 / AMD Ryzen 5 5600)
    • Memory: 8192 MB RAM
    • Graphics: NVIDIA RTX 3060 / AMD RX 6600 or better
    • Network: Broadband Internet connection
    • Storage: 1000 MB available space
    Minimum:
    • OS: Ubuntu 22.04 / SteamOS 3.5 (glibc 2.35+)
    • Processor: Quad-core, 2.5 GHz
    • Memory: 4096 MB RAM
    • Graphics: Vulkan 1.3 GPU with Mesa 23.1+ (RADV/ANV) or NVIDIA 535+. Requires VK_EXT_shader_object and VK_EXT_descriptor_buffer.
    • Network: Broadband Internet connection
    • Storage: 1000 MB available space
    • Sound Card: Any (PipeWire / PulseAudio)
    • Additional Notes: Native build, no Proton needed. Steam Deck supported.
    Recommended:
    • OS: SteamOS 3.6 / Ubuntu 24.04.
    • Processor: Quad-core, 2.5 GHz
    • Memory: 8192 MB RAM
    • Graphics: AMD RX 6600 / NVIDIA RTX 3060 or better
    • Network: Broadband Internet connection
    • Storage: 1000 MB available space
    • Sound Card: Any (PipeWire / PulseAudio)
    • Additional Notes: Native build, no Proton needed. Steam Deck supported.
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