It's either MineSweeper, StarCraft, or Super Mario Bros. 1. I've played each for billions of hours. I've had serious addictions to each. I play MineSweeper constantly during any phone call and while I wait for anything to load or install or download. I played StarCraft from about 1999 to 2003 straight. Then around 2004 I got obsessed with SMB1 speedruns, and practiced all day for months straight.
I guess... StarCraft, then SMB1, then MineSweeper. Oh, and Tetris.












