Doom 3 is a first-person horror shooting game developed by id Software and launched in 2004. The game is set in the 2145s on Mars when a military industry corporation The establishment was for the purpose of fellowship and immediate transfer. However, one of their experiments caused the gate to prison to be opened, the demons to be released. Transformed into a brave anonymous creature, the player will find a way to fight and prevent the demons from attacking Mars. There are 10 weapons in the game to help the character increase survival, and the remaining weapons will help the character increase combat strength. The enemy will randomly appear, so you need to focus and devise a reasonable strategy to be able to win.