Portal Of Doom: Undead Rising is a fast-paced, 3D first-person shooter game that puts the player in the shoes of a genetically-engineered space marine on a mission to save the world from fast-rising undead creatures. Players must traverse deadly environments, solve puzzles, and battle vicious undead monsters as they attempt to uncover the mysterious plot driving the undead horde. Armed with an array of powerful weapons, the player will have to use their calm nerves and quick reflexes as they bravely tackle the deadly horde of undead.

• Diverse enemies and environments - The game features a wide array of enemies and environments to challenge players.
• Solve puzzles - The game features a number of puzzles to challenge the player's mental and physical prowess.
• Upgrade weapons - Weapons can be upgraded and improved to handle tougher challenges.
• Multiplayer mode - Players can join together and work together to take on the undead horde.
• Achievement system - Players can unlock achievements as they progress through the game.

• Movement: W, A, S, D
• Jump: Spacebar
• Shoot: Left Mouse Button
• Aim: Right Mouse Button
• Reload: R
• Switch Weapon: 1-5
• Toggle flashlight: F
• Use: E
• Pause: P