Astro is a crash game: a multiplier climbs from 1x and a player cashes out before it breaks, or loses the stake. Fairness comes from a hash chain rather than a VRF: ten million seeds are pre-generated so that each is the hash of the next, the terminal hash is published on chain before any play, and the block hash of the closing transaction becomes that round's public salt. The protocol part is the open bankroll, an ERC-4626 vault taking USDG deposits and issuing ASTROLP shares that absorb the house's profit and loss, with exposure capped so a single bet can win at most 2% of the bankroll and a round at most 2.5%. A 2% fee is charged on deposit and an operator fee applies above a high-water mark. That vault is what DefiLlama counts, about $83k in September 2026. Caveats matter here: it is unaudited gambling by an anonymous team, the site requires an account rather than only a wallet, round orchestration happens off chain between commit and reveal, and no contract address is published anywhere on the site.

astro.fun · @astrofungame · Play · Bankroll · Provably fair · Statistics · DefiLlama

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