Ravioli, Prediction Markets & Debates
Science Markets
Will a new significant archaeological finding occur beneath the East Antarctic Ice Sheet by September 30, 2026?
This market resolves to Yes if NASA or a NASA-affiliated source publicly announces a researched, credible scientific explanation for the honeycomb patterns photographed by the Curiosity rover on Mars by September 30, 2026. Hypotheses or speculative statements will not count; the explanation must be supported by research or analysis acknowledged as credible by NASA. The market resolves to No if no such announcement is publicly made by this date.
This market resolves to Yes if Stanford Medicine or another reputable institution publicly confirms that the AI-discovered molecule, which mimics the effects of Ozempic without the side effects, receives approval to commence clinical trials by September 30, 2026. The resolution will be based on announcements from institutions, regulatory bodies, or credible science news sources.
This market resolves to Yes if a significant public policy change (federal or state law) aimed at protecting bees and addressing factors such as pesticide use or habitat destruction is enacted in the United States by September 30, 2026.
This market resolves to Yes if during COP31, which is scheduled for November 2026, a major participating country or coalition announces a new substantial climate policy specifically addressing the recent acceleration in global warming, as reported by the Potsdam Institute for Climate Impact Research. The policy must be officially announced and publicly verified during the conference dates.
Will genetically modified hookworms be used in a human clinical trial by December 31, 2026?
Will the microwave frying technique be commercially adopted for mass-produced french fries by the end of 2026?
This market resolves to Yes if official reports by December 31, 2026, show a substantial reduction in the invasive blue crab population due to the octopus release experiment off Italy's Adriatic coast.
Will the AI-discovered natural molecule be approved for weight loss treatment by December 31, 2026?
Will the NSF reverse its recent grant reduction decision by the end of 2026?
Will researchers publish a study validating PicII-503's influence on cosmic carbon by December 31, 2026?
Will a prototype quantum compass using phonon lasers be publicly demonstrated by December 2026?
Will an AI-based chip reduce energy consumption in data centers by 10% or more by the end of 2026?
Will the method to design carbon materials with AI be used commercially by the end of 2026?
Will a major scientific journal adopt 'peer replication' as a standard by the end of 2026?
This market resolves to Yes if a major scientific publisher publicly announces the adoption of a new automated system specifically designed to detect fraudulent or fake scientific papers by December 31, 2026. The announcement must come from a recognized scientific publishing house and include details about the system being used.
This market resolves to Yes if a DNA origami vaccine is officially granted FDA approval for human use on or before December 31, 2026. Any other outcome, including no approval or usage authorization by the given date, will result in a No resolution.
What Ravioli is
Ravioli is a free-to-play prediction market. You trade shares on real-world questions across sports, politics, and culture using free credits, and the price of a share is the crowd's live estimate that the outcome happens. Nothing here costs money, and the prizes are real.
A price is a probability
Every market trades between 0 and 100 cents a share. A share priced at 62c means the crowd puts the outcome at roughly 62 percent, and it moves as people trade. Read the number and you have the current consensus without wading through opinions.
Free credits, real prizes
You trade with Sense, the in-app currency. It is free, there is nothing to deposit, and it cannot be exchanged for cash. What you win is redeemable in the shop for gift cards and merch, so being right pays without anyone risking money.
How markets resolve
Sports markets settle against the official box score. Everything else resolves against cited sources, verified with live web search before payout. Winning shares pay 100 Sense each and settle straight into your balance.
Common questions
- Is any real money involved?
- No. There is no deposit, no wallet, and no crypto. Accounts start with free Sense and you can earn more through daily rewards and streaks. Sense never converts back to cash.
- How is this different from Kalshi or Polymarket?
- Same mechanics, none of the money. You get an order book, an automated market maker, and multi-outcome markets, but you play with free credits and compete for prizes instead of a payout in dollars.
- What are Debates?
- A second mode alongside the markets. You pick a side, write an argument, and AI scores the reasoning on fact-checking, relevance, and logic. Scores stay hidden until the debate resolves so nobody can copy a winning take.
Or see every open market, the debates, who is winning, or the full mechanics and scoring rules on the about page.