The game features a single-player mode consisting of levels where the player assumes the role of Sergeant Cortez, a time-traveling marine from the 25th century, as he attempts to go to the past to save the future.

Future Perfect, along with the other games in the trilogy, were rereleased on the PS4 and PS5 as a PS2 Classic in 2024, with trophy support, a rewind feature and improved loading times.

After arriving at HQ, Cortez is tasked with following signatures in the past that were created by time travel and thought to be caused by the TimeSplitters.

He goes on a mission to go back in time to find a way to stop the TimeSplitters race from being created, with the help of Anya, The General's personal assistant.

Using his Temporal Uplink, a device connected to the Time Machine, both of which Anya has invented, Cortez travels to the small Scottish island of Urnsay in the year 1924.

After defeating Khallos, Anya reveals to Cortez through the walkie-talkie on his Temporal Uplink that a mansion in Connecticut had burned down in the 1990s, leaving behind residue of Time Crystal energy.

He also teams up with a small group of cyborg rebels fighting against the machines to make his way to Crow's now-extremely large and powerful lab, filled with thousands of TimeSplitter embryos.

Cortez manages to destroy what he can of the lab, but is not strong enough to defeat Crow, who himself has combined with the TimeSplitter race and a war machine.

After Crow is defeated, Cortez puts a raw crystal into a device that causes a chain reaction that destroys the entire compound.

Cortez, Anya, and The General approach the window and observe the barren desert land restored to its former form; a lush, green forest filled with life.

[8][9][10] It won an "IGN Best of 2005" award for "Best First-Person Shooter"[36] TimeSplitters 4 was in development for almost a year but delayed after Free Radical went into administration and was subsequently bought out by Crytek.