You can also add faucet for those who want to try your site. Since there are a lot of online casinos that offer crash game, it would be hard at first to get your players. So if you can give them few satoshis to play and be satisfied with their experience, they might be convinced in depositing more satoshis and play your crash game.
Aside from the faucet, the dev should seriously consider in using lightning network as they are focusing in btc transactions.
That would help small-time players to try and test their game without worrying that they might be screwed.
At least no big deal if they lost money from this site. Because building reputation in the gambling industry is a hard job that would take long years of operations.