Adobe Photoshop CS2, I'm sure when they made that software they hoped it would be used for something this important and creative. My eyeballs and testicles exchange places if I use Paint for more than 5 seconds, either way I always have a pair of balls near my brain.
I love this topic, I'll try to make a suggestion later.
By the way (the reson why quoted), pointing to the game pontifex or what it was? The bridge building game where you was suposed to get a train over an obstacle?