Augur
Originally built on Ethereum, Augur is the first decentralized prediction
market in history. This is by no means a small feat. Traditionally, prediction
markets had to be centralized. We had to custody our assets and trust a central
authority to act as an honest actor (lol), and not to run off with our funds.
Augur, on Polygon, is literally turbo-charged. ("Augur Turbo." It's in the
name.) See, on Ethereum, Augur functioned by incentivizing "reporters" to
report off-chain data accurately. They were rewarded for doing so until
consensus was achieved, thus confirming an off-chain event.
Now, pretty much anyone can create prediction markets super quick, and for
super cheap. And with Chainlink integration? The oracle enables off-chain data
to be fed on-chain in a secure, accurate and timely fashion. (Talk about
composability.)
https://coinmarketcap.com/alexandria/article/polygon-top-10-biggest-projects