Set in the near future during a period of planetary colonization, Killzone drops you in the middle of a war between the ISA Command and a militaristic separatist faction, the Helghast. As one of four ISA members, your initial objective is to escort a high-ranking official to an evacuation point. Players can select between four ISA troops - each with special abilities and weaponry to accommodate their playing style - and battle through 11 intricately detailed environments that showcase the harsh setting of a war-ridden planet. Additionally, players can visit the armory and equip themselves with 27 different unique weapons. Drawing inspiration from classical military conflicts of the 20th century, Killzone demonstrates a unique graphical style that captures the grit and realism of intense military warfare.