Keepers (20 cards)
- Abduction Chamber
- Cow #1
- Cow #2
- Earth
- Mars
- Flying Saucer
- Humans In Black
- Instructions
- Mind Control Transmiter
- Ray Gun
- Space Modulator
- Space Suit
- Telepathic Translator
- Tentacle
- The Canal
- The City
- The Mothership
- The Pyramid
- The Tripod
- Tin Foil Hat
Creepers (13 cards)
- The Army
- Germs
- Important Human
- Pathetic Humans (10 cards):
• The Business Woman
• The Doctor:
• Drive-Thru Lady
• The Librarian
• The Little Girl
• Mohawk Guy
• The Nerd
• The Policeman
• The Prom Queen
• The UFO Nut
Actions (20 cards)
- Begin The Invasion!
- Destroy All Humans
- Discard and Draw
- Draw 2 and Use 'Em
- Draw 3, Play 2 of Them
- Everybody Gets 1
- Exchange Keepers
- Here, Humans!
- Let's Do That Again!
- Let's Simplify
- Mass Hysteria
- The Humans Are Revolting!
- Rules Reset
- Steal Something
- Take Another Turn
- Taxation
- Trade Hands
- Trash a New Rule
- Trash Something
- Use What You Take
Meta Rule (1 card)
- Time Limit
Ungoal (1 card)
- Retreat!
Goals (27 cards)
- Two All Beef Earthlings
- The Army Called In Sick
- Attack Saucer
- Plan of Attack
- Battle Tripod
- Brainwave Gizmos
- The Cities of Mars
- Grab That Cow!
- The Grand Entrance
- Home Sweet Home
- Humans Without Hats
- Invasion Equipment
- Mars Needs Women!
- Martian Architecture
- Martian Chess
- Martian Zoo Keeper
- Operating Manual
- Replacement Part
- Skloozmo!
- Space Fleet
- Take Me To Your Leader
- Target City: Amsterdam
- Target City: Cairo
- Target City: Washington, DC
- To Serve Cows
- War of the Worlds
- You Are Here
New Rules (18 cards)
- Basic Rules
- Draw 2
- Draw 3
- Draw 4
- Draw 5
- Play 2
- Play 3
- Play 4
- Play All
- Hand Limit 1
- Hand Limit 2
- Hand Limit 3
- Hand Limit 4
- Double Agenda
- No-Hand Bonus
- Human Season
- Martian Technology
- We Come in Peace
This makes a total of 100 cards in the box. A rulesheet is also included.