Which great exclusive games have you not played because they were on the other console?

[AbbathTheGrim]

I love 2D Mario so the NSMBWii (?) I would like to play, even when Nintendo has fucked the difficulty so that little kids and adults, pretending gamers, can actually play, SM3's last World, those were the days.

Also Gears Of War always looked cool.

Last Story as well. However, none of those games justify buying said consoles, not for me.