Collectible Crypto NFT games are coming a lot into market lately. If you remember one of my posts about Chumbi Valley. Where the creatures were meant to be evolve and used for battle. Same concept has been in use with the playermon too. Here you will be able to evolve, upgrade, and battle for the token rewards and collect NFTs along the way.
If you go to the official twitter account of the Playermon, you'd find a lot of interesting bits of information about the game.
How does the game work?
You buy the space stations for mining resources, you upgrade your creatures and then collect in game items to increase your inventory. You can sell as you want or even buy. So basically an NFT economy like any other game.

It's on Ethereum and likely to make use of the Polygon too. So in current Presale phase, there are not many of the details out about the whole ecosystem. But in near future we would be able to use it like any other Ethereum game with low transactions through polygon.
Is it worth it?
If you are into the NFT crypto games where it requires collectibles and the items before you can turn them into scarce resource and sell them. I think some level of money spending and also the churning for the resources would be something that is necessary in this game.
It's too early to say how good it can be in near future but keep a tab on the game.
Check out the game portal: https://playermon.com/