~snip~
And in the other platforms? can you win cryptocurrencies? or just answering correctly gives you the option to enter a draw?
^ A BTC faucet right, that gives you a small amount of BTC per hour.
Freebitco.in is the answer, they have a faucet and they are the oldest casino that gives a small amount to their user per hour, a small satoshi that you received, by answering the captcha you will have you 2-3 digits of satoshi.
However, I saw ads on my social media about the games that offer play to earn like the online game Special Force Rush which I did not try it yet. I think it seems that game is a little bit interesting.