You’ll see colored terminals around the room.
A major difference here is that the slot room has shadows lurking about, meaning you’ll need to either be more careful navigating or prepare to earn some good XP through fights. The other gambling option you’ve got is slot machines, so head to that section of the map after you’re done with the dice game. You won’t make enough to hit the goal, but continue to choose “Between 11 and 18” until the game is over.