MrT-Tar on 21 July 2011
1. Pokemon Blue/Red - Probably about 800 hours spread across about 11 playthroughs
2. Pokemon Crystal - Probably about 600 hours spread across about 8 playthroughs
3. Mario Kart DS - Probably about 400 hours
4. Monster Hunter 3 - According to Nintendo channel 267 hours
5. Super Smash Bros Brawl - According to Nintendo channel 214 hours
I'm surprised all 5 of mine are on Nintendo platforms...
