Operation:OPS is a lo-fi stealth-action FPS set in an alternate 199X. Play as an operative seemingly working for the world's most notorious terrorist, who is known only as "The Operator". Your health is low, and you are outnumbered and vulnerable. Once you are detected, enemy reinforcements will arrive in waves until your mission is complete. A variety of equipment can be selected before you deploy, such as explosives, motion trackers, nerve-gas grenades, sentry guns and amphetamines. Fight in up to nine different operations, with seven possible endings, depending on who you save, and whose orders you choose to follow.