Grepolis (20) - Almost walked away, but now that there's a war on, it's getting interesting again.
Heroes of Might & Magic 6 (20) - Clean and slick, but somehow not as fun as what I remember the series to be.
King of Dragon Pass (14h) - Finally picked this up for iPhone as I'd baulked a couple of times at $10 for an indie title on that platform. Plays well, and has a good atmosphere to sink into. Very kind on the batteries, which is a good thing for long-haul trips.
Dungeon defenders (6h) - Looks like an interesting LAN game, but solo isn't too much fun
Terraria (2h) - Still can't beat the dungeon skelly