Axie still has the most users playing. If you are trying to look for alternatives try checking this list
https://dappradar.com/rankings/category/gamesSo many games today are created on Polygon, BNB chain, WAX, Solana, and EOS. This is sort of an investment as well if you are rooting for its success, the stats you can find in the link will give you an idea about them also.
There will be so many dead games in this bear market so its very dangerous to invest on play to earn games right now unless you are so sure what will happen, many of them are just money grabbing projects, the team never had the intention to build anything.