Some games are made to be played on the go--quick little time-passers to keep us occupied as we travel to work or elsewhere. Others keep our interests for an hour at a time, maybe two, right when we wake up or before we go to sleep. The 25 games on this list fit into neither of these groups.

The games here are addictive beyond reason, making us yearn for one more level, one more match, or one more turn. No matter what time it is, no matter where we're supposed to be or what we're supposed to be doing, these games can keep us in our chairs for days at a time, locked away with our gaming systems just playing the hours away. Addiction in digital form awaits those who read this list...