Zero-G is a persistent single-shard browser MMO set in a 1:1 scale solar system built on real NASA MOLA/LOLA altimetry data. Every planet moves on actual Keplerian orbital paths. Every crater on the Moon is a real coordinate. Ships use Tsiolkovsky rocket equation physics — fuel mass matters, burn timing matters, and there are no magic brakes.rnAlpha 5.0.0 is live. The Auction House is open at Grottaglie HQ — pilots trade directly with each other through buy orders, sell orders, and bids. The player-driven economy is real. Crafting Phase 0.5 has launched the industrial foundation — raw ore becomes refined elements, refined elements become components.rnThe universe includes alien fleets with Jump Drive technology that attack your ships in orbit while you're offline, player corporations (Ventures) building modular starbases, pilot training at the Vatican Academy, fleet formation, deep space scanning, expedition events, and a planetary sensor network spanning millions of kilometres.rnThe Bulla Mariana monthly expedition is live — 28 days, 15 Gradus from Novitiate to Chrysonaut. New pilots receive a free Diamond Mining Tip at Gradus 1.rnFree to play. No P2W. No download. Runs in any browser. Public alpha since January 2026 — 1,230+ registered pilots