A lot of concept images were released for the discontinued revival of TimeSplitters.
Only a few days ago, Free Radical Design officially fell victim to the restructuring of parent company Embracer. There will therefore probably not be a revival of TimeSplitters.
This may also be the reason for a series of concept graphics for the discontinued game that have now been published by members of the development team.
Designers have posted their work on characters, weapons, locations, and more online through ArtStation profiles, which have been archived on the Free Radical wiki.
The images of the environments show, among other things, a city in the Wild West, a futuristic city, a Russian research station and various assets that are needed to design a game.
You can find the concept graphics in Free Radical Wiki