What is Descent Maximum?

"The one-and only 3D 360-degree battle-to-the-death roller-coaster ride which took the gaming world by storm has evolved into an action-packed twister for PlayStationTM only! Six brand-new worlds, 30 additional stomach-flipping levels, smarter enemies, pulsing light source shading effects created ONLY for PlayStation Descent-Heads, and 13 ultra-destructive weapons at your fingertips. Forget about "going down again." Dive full-blast into Descent Maximum and we guarantee your PlayStationTM won't know which direction IS down." (taken from the Interplay web-site)