Good cheap games for iOS 3.13

I'm stuck with an old 1st gen iPod for awhile, so what are some of the best apps and games for iOS 3.1.3, which is the latest I can use?

2D, sorry, I don't get on this part of the forums often. I hope that I can help...

I have a iPhone 3g. I'm using firmware from http://www.whited00r.com/. It is essentially iOS 3.1.3, but with some tweaks that allow some extra features available in the more recent iOS versions.

Anyway, the games I play on this device (which must be compatible with 3.1.3 to run) are:
(EA games...Paid $1 each)
Boggle
Yahtzee Adventures
Risk
NBA Jam

(Popcap games...Paid $1 each)
Plants vs. Zombies
Peggle
Bejewled 2 (Free?)

(Others...most I've paid nothing for)
**Tower Defense:
The Creeps
geoDefense
geoDefense Swarm

**Sports
Let's Golf
Baseball Superstars 2011
Fishing Kings
Doodle Golf

**Puzzle
LetsTans Delux
BitFlip
Puzzle Quest
Shift
Toki Tori ($1)

**Shooters (Twin-Stick)
mini Gore
BloodnGuns
GeoFighter
Tilt to Live ($1)

**Others
Civ Rev
Game Dev Story ($1)
mini Squadron
Resident Evil 4 ($1)
Zenonia ($1)
Rat on a Scooter XL(Donut Games = FUN!)

Watch the iOS game sales thread in the Game Deals forum...download any free title that interests you to you itunes account from your computer & then sync to your iPod. That way, even if they don't work on 3.1.3, you'll still have them for when/if you upgrade. Hope this helps!