I always seem to enter bouts of hardcore portable gaming at random times. I'll go weeks forgetting about my consoles or PC and focus on playing games on my Nintendo DS or PSP Go.
Lately, I haven't touched either handheld system but with God of War returning the PSP, I foresee that will change very soon.
I own an iPhone and I've purchased a lot of games for it but I never really use the device for gaming. There's some great software available, don't get me wrong, but I just don't use it. Maybe it's because I'm still stuck in the dark ages with a 3G and it runs like a pirate with a peg leg or because the battery is terrible after years of constant iPod use but it's rarely my portable gaming platform of choice.
What device fuels your portable gaming urges?