Extreme Ghostbusters: The Ultimate Invasion

Extreme Ghostbusters: The Ultimate Invasion is a 2004 shooter for PlayStation, developed by Similis and published by LSP. Released in Europe, the game is similar to Time Crisis and supports the GunCon controller.

Players choose one of the four Extreme Ghostbusters and take on missions set in New York. Combat features two proton-based attacks: a standard mini proton shot that uses one-tenth of a proton cartridge, and a proton beam that uses five-tenths.