Estimated year of release: 2000s (Possibly 90s)
Graphics/art style: I think I remember casino-like graphics, like those of hoyle casino but I'm not completely sure. It won't let me send image links as a new user so I might have to comment the image links of what the game could have possibly looked like
Notable characters: I don't think there were any notable characters
Theme: The game seemed to center around gold but I don't think the objective of the game was to actually get gold it may have been part of the mini-games talked below.
Notable gameplay mechanics:
The mini-games inside the game
1. There was a dig-dug mini-game, I do not remember how I accessed it. (Could've been something that looked like dig-dug but not actually dig-dug)
2. I remember and a (gold rush?) mini-game also. I don't remember what it was exactly like but I remember vague images of pre-rendered backgrounds of a mine-cart with/without gold going down a cave.
3. There was a slots mini-game where somewhere you were slid a beer and you had a couple chances to catch it.
Possible canidates: One of the hoyle casino games, microsoft casino, gold club casino (1997) I don't think it is any of these though but they look very similar. The main problem is I can't find any casino games that have those mini-games incoporated in them.