Jim said:Set your cellphone to ring/vibrate.
I can't tell you how many times I've started up GTA4, walked out of the room for a moment but left the DS3 on a table or something, then get the shit scared out of me when Niko gets a call and the DS3 vibrates around the table and falls off.
They certainly don't overuse it, but it's there.
This actually happened to me two times and both times it was scary as hell. Didn't help that it happened around 2am.
I finished the game a few days ago, but my percentage was 78% and 60 hours >.> How did people do it in less than 20-30? Given how long we had to wait for this game, the last thing that I wanted to do was end it in 2-3 days.