Axie is on the Ronin sidechain, faster and cheaper than ETH, there's a good bridge and meta mask integration.

Like many blockchain games the initial cost of entering is a massive barrier. To start Axie you need three Axies, the cheapest Axie is $344, so looking at over $1,000 USD minimum to start. It is what it is, but I think this is a problem that needs to be solved in play to earn.