In May 2007, John Passfield and 3D Realms released Alien Carnage as freeware.
The cartoon-style game features agent Halloween Harry, who has to save the world from aliens that want to take over control of Earth by turning its population into green-skinned zombies. Some of the enemies reference Aliens, Gremlins, and Elvis Presley. Harry is helped by controller Diane, who gives him information via a video link.
There is a sequel to this game titled Zombie Wars.
This Video Game contains examples of:
- Alliterative Name: Halloween Harry.
- Ash Face: When you run out of health, Harry shows this, along with an Oh, Crap! face, before he explodes.
- Cap: If this
sprite sheet is any indication, you can only have five lives in hand at once. - Continue Man: If you run out of lives, you get a still photo of Harry being sat on by some zombies and trying to get free as the continue timer counts down.
- Expressive Lives Counter: Normally, the number of lives you have left is shown on top of your health meter; the bar itself is a yellow and orange gradient. When you have no spare lives left, a skull and crossbones symbol appears over your health meter, which then is red with a flame-like pattern at the bottom.
- Heal Thyself: In addition to picking up food items, rescuing a captive will also give Harry full health, as will a 1-up icon (it's simply a white block with a purple 1 UP on it).
- Hyperactive Metabolism: Harry can pick up food items to boost his health. He can find burgers, hot dogs, fries, cookies, and soda cups; they all heal about the same amount.
- Infinity +1 Sword: The missiles. It doesn't matter what difficulty you play on, they will destroy all mooks with one hit.
- Jet Pack: Harry has one, and it uses the same fuel as his flamethrower.
- Kung Fu-Proof Mook: There is an uncommon alien enemy, wearing what appears to be a fireproof suit that No Sells being burned by a flamethrower, other weapons (like a Photon Cannon) is required to defeat them.
- Plot Lock: The player must free every captive before exiting a level. In addition, the final episode, "Alien Ship," is only unlocked once you've completed all of the first three.
- Shareware: The Office Block episode in Halloween Harry and the Sewer episode in Alien Carnage were originally this. As of May 2007, the entire game is freeware.
- Smart Bomb: The Omega weapon destroys all enemies on the screen with a single use.
- Videogame Flamethrowers Suck: Harry starts off with a flamethrower. It's not the most powerful weapon to have, and the fuel used for the flamethrower is better saved for the jetpack.
- Video-Game Lives: The number of spare lives you have left is shown on top of your health bar; if you're on your last life of that "credit," it's a skull and crossbones symbol instead. In addition, you have two extra "credits" (continues) which give you a fresh set of two spare lives.
