This is interesting to hear about nft betting. Possibly it have been ongoing for long but not as popular as we think maybe the casinos that has this features should start making it public for gamblers to see and those that do not have should try adopting this gambling features an see how it goes.
I never expected to come across a question as this here but to seeing it being asked the then there is every possibility of such in existence and it would likely take a bit time for the adoption to be regular. I hope scammers would not use this as opportunity to start sending fake NFTs to peoples wallet luring them to transfer and clearing their wallets at the Se time.
I doubt if the game is popular as other games, if it was as popular and likable by players then probably all the casino that is advertised here would have the game and we will regularly debate about it here too. Funny but am just hearing it now that you can bet against other NFT, I did make a search and I can not see any valid result for my search.
I'm also surprised, and if I were asked, I would have even told the person to look it through towards exchanges and not betting platforms. But these days, casino are dipping their hands in anything, so we should not be too surprised anymore...lol.
Still, anyone interested should clearly check the condition of the offering because anything related to the market that casinos offer always comes with a little twist that will favour it more than how it is being done traditionally. Their option trading is an example, the difficulty is higher.