8 dollars top. I'm thinking of Zenonia? I tried X2 Football lite, and its pretty good. Assassins Creed? Some games that you may recommend but I have or don't want: Rolando Hero of Sparta Fieldrunners Creeps Car Jack Streets
Assassin's Creed gets my vote. Or Tiger Woods PGA Tour, whichever interests you more. I highly recommend either one of those.
Is 8 dollars all you have left in credit? I dunno, but If you want a game that you can play for a long time, Tiger is VERY good, and you could probably play the Sims for a while. The creeps is great, fieldrunners is great, I'm a big TD fan though.
I don't remember how much Myst cost, but that would be good. Bring along a way to get access to the hints though!
Rogue Touch would last a while if you have no experience at it. There's a bunch of puzzle games you can get that have 100's or 1000's of levels as well.
Get Zenonia I'm at 30hrs and I'm just about to finish. Then I'm going to play through again as an evil character
I played through 3 pages of Tanzen. After a while, it gets old and frustrating. Best get something with variety and mindless action (along with puzzles, that it). I don't really play that much, or I'd give you suggestions. What about the X2 (or X something) Motocross game? Heard that has a lot of gameplay in campaign mode.
Take Zenonia, but you may find repetitive killing monsters tedious after a while. Or PathPix, which is a great puzzle. Other than that I have no idea. Return to Mysterious Island?
Oooh, and iFallout! I've gotten twenty hours out of the alpha so far. And geoDefense is great. So is Airmaster 3D.
If your going to Europe woudn't Europe be more interesting than glueing yourself to your iPod the whole time? Anyway, I'd say for a long Story based game, my personal choice would be either Zenonia or Myst. Rogue Touch if your into the retro thing.
X2 Football is good for long trip if you like football. If you like play some logic game, CLUE is challenging and may let you play over 20 hours.
My suggestions would be: Puzzle Quest - an addictive mix of match-3 and an RPG, easily 40 h. The Quest - a western RPG in thestyle of Might and Magics, but just with 1 character. Ditto. There is also an expansion to it. Reign of Swords - turned-based tactics with a really long (and great IMHO) single-player - i.e. 46 missions, each of which takes upwards of 20 min to complete. Also costs just a buck at the moment, IIRC. All 3 have Lites, too, so you can try them out rather than buying a cat in a sack.