Doom Resurrection (iPhone)

Doom Resurrection is an first-person  game developed by Tom Mustaine's  in cooperation with the mobile games division of id Software. It was released on June 26, 2009. John Carmack led the development team. Doom Resurrection uses assets from Doom 3 and acts as a side story to the game.

Plot
The game stars an unnamed marine, a survivor of Bravo Team from the original Doom 3. He awakens after the ambush on his squad and is soon confronted by Dr. Garret, who presents him Sam, a flying droid capable of opening doors and hacking computers. Together with Sam, the survivor makes his way through the Mars facility, battling zombies and demons on his way through the base. His goal is to reach a port where a spaceship full of surviving members of the UAC facility is preparing to blast off. On his way, the marine meets a few survivors, collects valuable information through Sam, and visits Hell, where he closes the demon-spawning portals. Eventually, the marine is forced to leave Dr. Garret behind, and Sam sacrifices itself to prop open a closing bulkhead door on the way to the dropship. Sam manages to give the marine the data previously collected, but the game's ending implies that the UAC engages in a cover-up of the details of the invasion.

Some elements of the game's plot were recycled for the 2012 release of the Doom 3: BFG Edition expansion pack The Lost Mission.

Gameplay
The player is taken through a total of eight linear arcade-style rail shooter stages wherein the player can tilt the device to aim and hit touch areas in the corners of the screen to fire his weapon or reload. Other touch areas on the screen appear in contextual situations similar to s, allowing the player to dodge attacks or take cover from enemy fire. Gameplay typically lasts four to six hours depending on the difficulty selected from the four levels available. Performance ranks are assigned at the end of each level.

Levels

 * EnPro Labs
 * EnPro Underground
 * Tunnels
 * Delta Labs
 * Gehenna
 * Abaddon
 * Alpha Labs
 * Mars City

Monsters
A large portion of the Doom 3 bestiary is represented. Enemies animate and attack in manners similar to their behaviors in Doom 3, though in a much more directed fashion. Enemies often appear from behind or in surprising locations near the player, as a test of reaction time.

Weapons
Most of the Doom 3 armory is represented in the weapons that can be found, which can be switched between using the touch area in the upper left corner. Their mechanics are similar to their Doom 3 versions, though head shots are particularly more effective and are strongly encouraged by the game. Weapons and ammunition can be found by shooting crates, referred to in-game as "secret items," and sometimes by touching loose items on the screen - occasionally this becomes an element of skill, as there will be a limited window of opportunity in which to collect an item before it is hidden or destroyed, or because it must be quickly grabbed between waves of attacking monsters.