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.
I dont think lightning network will be suitable for this site, because it wont help small players at all since the minimum bet is 0.25mBTC = 25k satoshi.
http://prntscr.com/owudua When I tried to put smaller bet amount than 0.25mBTC but failed, getting RED font on it which means it is not allowed to bet smaller than 25k satoshi
http://prntscr.com/owuefw Faucet wont work as well because I dont think they will have faucet that fit with the minimum bet. If the minimum bet is 25k satoshi means that the faucet should give at least the minimum bet amount, logically it wont happen unless the site reduce the minimum bet.
Correct me if I'm wrong about this minimum bet since I cant find any ways to place bet less than 25k satoshi so I assume it is the minimum bet.