I faffed about in some absurdly generous pinball tables until I got enough rings to fill the casino vault to the point I could take a chaos emerald. Considering the rings were the casino's in the first place I think that's still robbery.

Then a blue Fabergé egg or something descended down a nearby alley, and *then* the emerald gets nicked within minutes of it being in our possession, maybe to hide Eggman's stance on gambling for the time being.

The egg is some kind of key, so I take it to the Mystic Ruins for wherever it need to go there.

Mystic ruins station is a tall wooden monstrosity, built off some broken railway bridge. The train is parked less than a metre from where the tracks bend horribly and the bridge stops. I'm fairly certain this isn't safe, and at some point a train conductor will misjudge stuff and the entire train will crash upon itself and into the sea.

This game seems to be my kind of odd. :D