ESWAT: City Under Siege is an action game set in a futuristic megalopolis where players assume the role of a police officer tasked with combating a wave of criminals. As the game progresses, players will encounter various enemies, transitioning from basic criminals to more formidable foes such as soldiers and robots. The gameplay requires quick reflexes and strategic use of the police officer's service weapon, especially in the initial levels where players must adapt to the evolving challenges.

The game distinguishes itself from other versions by incorporating platform elements and a non-linear level design, enhancing the overall experience. As players advance, they can obtain a cyber suit that offers enhanced protection and firepower, crucial for defeating tougher opponents. This engaging blend of action and strategy makes ESWAT: City Under Siege a compelling title for fans of the genre.