S.C.I. - Special Criminal Investigation

S.C.I. - Special Criminal Investigation is a racing/shooter arcade game that was released by Taito Corporation in 1989; it runs on the company's Z-System hardware, and is the sequel to Chase H.Q., which was released in the previous year, and had begat a spin-off game, Crime City, earlier in 1989. It was later converted for several different systems, but the Sinclair ZX Spectrum and Sega Genesis ones were renamed Chase H.Q. II possibly to increase recognition among fans of the original - and these ports are not to be confused with Chase H.Q. 2, which was the final title in the series in 2007.

The players must once again help undercover policemen, Tony Gibson and Raymond Broady (also known as "Mr. Driver"), catch up with several criminals' cars with their unmarked patrol car which is now a red Nissan 300ZX T-Top Turbo (and its controls are identical to those for the original custom black Porsche, only without the break pedal); however, their steering wheel now has two additional buttons on either side of it which, when pressed, will cause Gibson to stick his head out of the car's sunroof and fire a shot from his gun (which he, and Broady, first used in that aforementioned Crime City). In the World versions of the game, Nancy (Chase H.Q.'s dispatcher) is renamed "Halen" (but she regains her original name for the spin-off game Quiz H.Q. in 1990), and the car's speed is also measured in miles per hour (as opposed to kilometres like in the original Japanese version) - but in every version of it, the cops' ultimate mission is to rescue the Mayor's kidnapped daughter Jennifer.