PTE or play to earn platforms are blockchain based games that pays you some amount of crypto coins for playing games, most of PTE platforms have their own coins or tokens and they pay for players on thus coins, but some pays with thus coins that are already known like trx and eth coins, my favorite play to earn website was CryptoRoyal gane its web based game and pays royal token and its very fun game to play. You earn royal token when you win the game, and i have earned some royal token.