Well, not all. I know one that give tokens as a reward for playing, and these tokens will earn holders some dividend. There were no burning or anything, the tokens will still at the exact same value time after time. So?
Then we have to compete with them

I know one that give tokens as a reward for playing, and these tokens will earn holders some dividend. There were no burning or anything, the tokens will still at the exact same value time after time. So?
This means that this token has no fixed supply and, according to this scheme, an unlimited number of tokens will come into circulation. Of course, it may be good for players to earn tokens while playing, but if these earned tokens are not burned, then this will result in a high supply, which could make the token worthless.
If you don't have any plan to compete with them, then why would anyone bother looking at your project? What'll be your competitive advantage? What's your point if differences?
Our idea is to create a casino that has a large selection of games. We do not just want to offer traditional games like dice, moon, spin and lotteries, but also games that you will not see in most cryptocurrency casinos like live casino games (like blackjack or roulette).
We at AIO Casino have strong partners and developers with which we are able to do it all.