Las Vegas Dream 2 is a Japan-only PS1 sequel to the HAL Laboratory pair of games known to the west (more specifically, childhood me) as Vegas Dreams and Vegas Stakes
they're relatively standard casino games (all featuring nearly identical slates of blackjack, slots, keno, seven card stud, roulette, and craps) with the added twist of light conversational elements, where recurring characters will occasionally strike up a conversation with you and cause you to be struck by a bolt of good or bad fortune.
for example, in Las Vegas Dream 2, someone might ask you to buy them a copy of a hit new video game called Las Vegas Dream 2. (unironically the first random event I hit)
doing so might put you out the $50, or might put you $950 in the black if the thank-you keno ticket they gave you pays out big. more common events include someone selling you a valuable necklace on the cheap, or spilling something on your coat.
it's all a fun bit of flavor that, in the series's PS1 outing, comes equipped with comically dorky FMV clips where a cowgirl puts on the most American accent possible or a computer nerd acts ashamed that he wet his pants (as far as I can tell, this nerd has a continuous plot arc that ends up with him striking it rich and sharing $100,000 with you if you're kind to him, but I only found this out through game data analysis, as when I played he just kept asking me where the bathroom was three times in five minutes)
done well, it leaves you spinning games of keno over and over waiting for the "keno lady who knows all" to appear, as foretold by the cocktail waitress at the blackjack table. in practice however, I hit the same events over and over while apparently missing the other 80% of the game, with no clue as to how to come across it. is it random? are there flags I have to hit?
LVD2 takes place over 8 days where you have to turn $1,000 into $1,000,000, but with no apparent plot structure within that. it's also worth noting that achieving this 100,000% return is extremely difficult when every game has bet limits in the four digits (and is not particularly rigged in your favor), meaning that the only real feasible way to make it without losing real life or game time is to spin the $200/play slots and hope for a jackpot (which I did hit, once, while not looking at the screen).
so it's a bit of a weird and IMO not well designed game, but it's sufficiently hipster and unique enough (to speak nothing of the wonderfully dated 2000s-Future 3D render vibe) to for me to enjoy putting a few hours in it before savescumming my way to the VIP club. I really gotta hope there's more casino games with heart put into them out there. I'd love to play a real lively texas hold em game (LVD2 has seven card stud, which is mechanically interesting and full of information, but painfully slow and tight).