Overview
Rain screenshots
The official rain.one page did not finish loading in headless Chrome during editorial capture. We do not fabricate a UI. Three fabricated UIs would be worse than an empty slot.
What Rain is
Rain is an Arbitrum prediction-market protocol that DefiLlama ranks #2 by category TVL. Watchlist only — permissionless market creation is not a Kalshi licence and not a second Polymarket. Confirm which front-end you open.
DefiLlama category TVL as of 2026-09-09: about $28.5M (rank #2 in the prediction-market category on Arbitrum). TVL is not event-book depth and not a licence.
Arbitrum prediction-market protocol where anyone can create markets Directory type: decentralized. This page is a desk note with a public-interface snapshot when we have one — not a seven-factor flagship review and not financial advice.
Interface
No public UI on file. The official rain.one page did not finish loading in headless Chrome during editorial capture. We do not fabricate a UI. We do not publish Cloudflare challenges, parking pages or private shells as screenshots.
Open the official site only after you read eligibility on that domain. Visit links on GammaPredict use a nofollow outbound hop.
Markets and rails
Tagged categories on this listing: crypto, politics, sports. Rails we record: Arbitrum. We do not publish a fee percent we have not read on a live ticket. Network costs, spread and any app fee stack — confirm on the venue.
Access, KYC and region
KYC tag: Wallet. Region line: Official UI unreachable. Wallet or account access is not a passport and not a licence. Check the venue’s own terms. GammaPredict does not publish VPN workarounds.
Desk verdict
Use this note to see what the public UI actually is (or that we could not capture one). If you wanted a full review, start with Azuro, SX Bet, Smarkets or the flagship directory.
Directory facts on this page (type, KYC, rails, Gamma Score) are research labels, not a promise of liquidity or legal access. Visit links use our outbound hop and stay nofollow sponsored.
Strengths
- Second-largest reported TVL in Llama’s prediction-market category on this snapshot
- Public protocol positioning: permissionless market creation on Arbitrum
- Useful research flag when a roundup sorts only by locked capital
Risks and checks
- Not a US designated contract market. Protocol TVL is not the spread on one event.
- TVL is still ~12.5× smaller than Polymarket International on the same snapshot.
- Confirm which front-end you are opening, geo terms, and withdrawal path before any deposit.
Weighted from liquidity, market variety, region access, KYC friction, fees, UX and transparency.
Choose the next action for Rain.
Visit the official site after checking eligibility, or compare alternatives on GammaPredict.
Rating breakdown
Best fit
- Researching the Arbitrum protocol Llama ranks #2 by TVL
- Comparing a permissionless factory against Polymarket’s retail board
- You need a CFTC cash venue — that is still Kalshi
- You treat category TVL as a populated order book
Verification checklist
- Confirm regional eligibility and platform terms before depositing funds.
- Read market wording, expiry time zone and resolution source before trading.
- Check liquidity, fees, withdrawal path and settlement history for the specific event.
Best alternatives
PolymarketCrypto-native prediction market discovery
KalshiUS CFTC event contracts
AzuroSports prediction liquidity protocolEditorial note
This review is research, not a personalised recommendation and not financial advice. GammaPredict cannot recover funds lost on a third-party venue. See who we are, how scores are built and how to contact us.