Nova Protocol
Single-player
A neon bullet heaven at absurd scale. Thousands of wireframe enemies, one auto-firing interceptor, and a grid floor that buckles beneath the swarm. Draft augments, evolve your weapons, and survive a boss every five waves — until the Black Hole arrives at wave thirty, then it's the Finale wave!
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Prices in official storesOfficial stores sell the key on behalf of the publisher (Steam, GOG, Humble…). Keyshops are third-party key resellers (Kinguin, Eneba, Instant Gaming…): they cost less but aren't the publisher's store, and support and refunds go through them. Check the key's platform and region and prefer sellers with many reviews. On Linux what matters is that it's a Steam key: the game starts with Proton just like one bought on Steam.
1 stores · updated 13 Nov, 12:45 · lowest first
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Prices in euros, for Europe. Prices updated on 13 November 2026 at 12:45. Price data provided by IsThereAnyDeal. Some links are affiliate links: if you buy through them IncastroPC may earn a small commission, at no extra cost to you.