Metamask is one of the most commonly used Ether wallets. And Ether is what you should be concerned about because most crypto games run on Ether (ETH).
It is a browser extension and works with Chrome, Firefox and Opera or the Brave browser which is available to download from the MetaMask website.
Metamask allows you to run Ethereum dApps in your browser itself without having to run a full Ethereum node. If you aren’t familiar with dApps, they are web applications which run on the Blockchain network on the backend.
If this sounds like technical jargon to you, just know that Metamask requires no login and it keeps your private keys on Chrome itself with password protection.
The founders of MetaMask say that their mission is to make Ethereum easy to use for the largest number of users possible. MetaMask encrypts your private keys and stores them on your computer.