A couple more from me:
Dwarf Fortress: Randomness = Awesomeness
Dwarf Fortress: 2 cats, 1 fort
Dwarf Fortress: AA has no purpose here
Dwarf Fortress: More 'shrooms than Woodstock
Dwarf Fortress: Less hippies than Woodstock (provided you played right)
Dwarf Fortress: Let's see your DM come up with a better campaign
Dwarf Fortress: Where reality is surreal, where surreality is real
Dwarf Fortress: Where modding is legal, in fact, it's encouraged
Dwarf Fortress: Where you can sell coins for more coins, just because one is prettier than a few, and nobody would think twice about it
Dwarf Fortress: Can you strangle a colossus with a rock? I have.
Dwarf Fortress: Where it's possible to do anything without tools (sorta)
Dwarf Fortress: Where dying of natural causes means being melted by magma, eaten by a carp, cave ins, drowned and frozen...
Dwarf Fortress: This is what everyone was playing/seeing in The Matrix.
Dwarf Fortress: This is what God plays on His time off
Dwarf Fortress: The only other game where you can store a dragon, 4 cows, 200 kittens, and 20 goblins in a square foot of space, and nobody asks any questions
Dwarf Fortress: Where perpetual energy is a reality
Less slogany:
Adventure Mode in Dwarf Fortress is the most fully featured underpants wrestling simulator to date.
What proof do dwarves make alcohol? Because these things can explode.
Getting a burn notice means an imp escaped from the magma pipe.
"Fight or flight?" is what hammerers usually ask before they strike.