Metal Gear Solid Mobile released in 2008 to the N-Gage service, aka N-Gage 2.0 for the S60 mobile platform. MOB is a fully 3D game that takes place between Solid 1 and Solid 2 in a VR simulation. It features a camouflage system, in-game achievements, and 14 VR levels.
Full map by DSmon, click for full detail