Alien

Basic Information

An alien is a creature of extraterrestrial origin. They are likely to exhibit Alien Biochemistry.
Also known as a Xenomorph (AGk: 'Strange Form').

This trope generally will not refer to the more prosaic definition of 'alien' … which is basically a synonym for 'foreigner' (as in Resident Alien, Illegal Alien and Enemy Alien).

List of Alien Types and Descriptions

Many of which are also Tropes.

• Alien Animals
• Big Creepy Crawlies
• The Blob
• Ditto Aliens
• Energy Beings
• Genius Loci
• Green Skinned Space Babe
• The Greys
• Human Aliens
• Little Green Men
• Mechanical Lifeforms
• Muppet
• People In Rubber Suits
• People Jars
• Plant Aliens
• Precursors
• The Puppet Masters
• Reptilian-Humanoid
• Rubber Forehead Aliens
• Serkis Folk
• Space Whale
• Starfish Aliens
• Sufficiently Advanced Aliens

Other Tropes

• Alien Abduction
• Alien Among Us
• Aliens And Monsters
• Alien Invasion
  • Benevolent Alien Invasion
  • Easily Thwarted Alien Invasion
• Aliens Steal Cable
• Aliens Steal Cattle
• More Teeth Than The Osmond Family
• Narrative Tropes
• Otherness Tropes
• Science Fiction
• Sufficiently Advanced Aliens

See Also:

• Alien Biochemistry
• UFO

Sources

Bibliography

1. GURPS Space - has an excellent system for rolling up random aliens

2. TV Tropes Entry

3. Wikipedia entry on Extraterrestrial Life

Game and Story Use

• Adventure Seed: Jumpgate to Elohi
• With fantasy or mythological creatures, the players often know what to expect, since the stories revolving around them tend to be common knowledge. Aliens, in contrast, are potentially capable of anything, so use them to surprise the players.