A FPS game from Taiwan with elements of Doom, Duke 3D, and Shadow Warrior. The game *heavily* borrows from these sources, and has caused some people to question the games legality.

This Taiwanese Doom clone tells the story of a post-apocalyptic future after a nuclear holocaust had been initiated by a self-aware AI defense system known as Zaker. It's basically a copy of the plot of The Terminator. A dwindling human resistance now battles against an army of machines trying to terminate them! You take the role of some guy who must travel into the distant past, the year 1999, to confront Zaker and prevent the planet's doom. Also, you fight the Predator, boss of Satan World. And then in one day, the resistance who are resisting Skynet contacting Ji Yuan and want to he join. Player controls the protagonist Ji Yuan, who was a fighter of Skynet and after his parents (who are the chief scientist in Skynet) both got killed and he wants to find the truth out of what happened. But Skynet just stopped his investigations for no reasons, and made him suspect that he had done something related to the death of his parents. You kill enemies, get the keycards, blow shit up and go to the exit to next mission level. It has some cutscene texts and dialogues when the level starts and ends, it also has some NPCs/tip points in the level who tell you about something like the mission details or where you go/find some supplies.