Okay, I'm typically not a big "gamer". No Playstation 2, not tons of PC software on my desktop. I do have Flight Sim 2002, Combat Flight Sim, Sim City 3000, Age of Empires, Age of Mythology, Need for Speed III, Nascar Racing on my home PC.
My Axim has been used for business and utility functions so far but yesterday I bought a couple of Hexacto's game bundles. I'm very impressed with their small file size and bunches-of-fun gameplay. Here are my 'capsule reviews' of each game in the 2 packs:

Lemonade Inc. - Set up your own Lemonade business and run it for financial success. Play around with recipe, inventory, price and business expansion. Watch for external influences to your business success like weather. Plays landscape on the Axim screen. Incredibly simple to learn and very, very addictive.
:D Slurp - I don't know how to describe this one. You've got a lot of liquid blobs on your screen. Use your stylus to click on them and the blobs go away BUT use strategy to pick the right combinations to click on so you can clear the screen. A no-brainer to learn and hard to stop playing.
:) Pop's Pipes - Kind of like Tetris except it's not the 'block shape'you care about as the tiles fall, it's making the 'pipe picture' on the falling block 'fit' your other pipe blocks already on the screen. Link four blocks together and they disapear. Super easy to learn. Fun, but the Axim's D-Pad button is sluggish when playing and sometimes makes the blocks go to the wrong places. I believe I can remap the buttons but haven't tried it yet.

Emperor's Mahjong - A graphically rich Mahjong game. Match the tiles to clear the screen. Plays landscape on the Axim screen. Lots of styles, patterns, and options. I must be getting old because those tiles are real tiny on the Axim screen! Reading glasses needed! Fun game
:crooked: Awele - I'm still learning this one. Ancient game of strategy where you capture 'seeds' on a gameboard. Website says "very easy to learn, but can take a lifetime to master". I'm in the mastering stage. Cool graphics and reasonably fun.
Again, impressed with Hexacto's game design and fun'ness.
Paid $59 total for the two game bundles - worth the $$ in my opinion.
www.hexacto.com