Is there any chance to add another crypto like bitcoin, dogecoin, litecoin or else?
Because I think people will choose the other coin besides ethereum only.
So if you can add another coin, you will have two option to place the bets for the user.
Yes. We only support Ethereum right now.
I know Bitcoin would be the best choice for this but the platform is based on a smart contract and writing a Bitcoin smart contract is not the easiest thing.
Same goes for the other options you mentioned (dogecoin, litecoin).
We could add all erc-20 tokens right now (golem, bat, loom, dai etc) but i don't see the point unless people adopt betting with ETH.
Another option would be to create another smart contract with a blockchain like EOS. This is feasible and we are actually considering it.