This blackjack prototype doesn't have any nice graphics, but the core gameplay is functional.
It has been abandonned in development. The base is high fidelity to the game but it was meant to have more features and gameplay elements, as shown by the crypto miner.
The crypto miner gets you free money every few minutes, and since it's upgradeable to give more money, it also serves as a sort of "checkpoint" in case you lose everything.