despite it's a faucet site, also coinpot and their websites allow to exchange directly bitcoin and other crypto.
but they have a multiply game (like a dice site with some options) that allow you to gamble on their site.
You can easily exchange the following coins:
BTC BCH DOGE LTC DASH (Tokens - a sort of coins created by them and rewarded free to users)
since they don't ask for withdrawal fees, I have found very convenient deposit dogecoin (from an exchange) and then exchange to bitcoin