Right now there are huge lists of them where you have a choice on whether you buy tokens on their early pre-sales or invest in the game hoping that you will get your ROI as fast as possible but there is no assurance about it. Is this gamble its true sense it has just some part where you need to take the risk but not that low odds where you can get your capital back?
First you need to understand that these are the NFT games where you play the game and earn money. You can invest in the game token also and hope it will rise as the NFT games become more popular. Most people invest in NFT games to play and earn regular income. This is completely different from gambling as gambling games are pure luck based but with NFT games, you need a strategy to win the games and level up.