Iron Ruin is a racecourse in Sonic Drift 2 for the Sega Game Gear. This stage is the sixth track of the Purple Chaos GP - Purple being the easiest of the three tournaments - coming in between Desert Road 1 and Desert Road 2 (2 being the first track of the subsequent White Chaos GP). Iron Ruin is not a cyclic, three-lap racecourse; competitors must race right across the stage, with the fastest racer awarded a Chaos Emerald.
And more bleak or desolate place it is difficult to find within the locales of the Chaos Grand Prix. Iron Ruin is a decrepit industrial wasteland, its skyline clogged with broken manufactories and dark, shadowed assembly plants. Plating the entire region, acres of metallised ground have transformed into lifeless fields of ochre rust, a monotony broken only by the black, yawning pits which appear from time to time on either side of the track.
The obstacles that litter the track here are strange "Reverse pods", which temporarily cause your vehicle to steer left when you hold right, and vice versa.