For some the iPhone is a phone used primarily to make calls and such. For others it is an e-mail device, you’re always in contact. For still others it is a productivity thing. People can get more done with an iPhone than without it. Yet another group is swayed by the utility, with so many apps the iPhone is the swiss army knife of phones without the toothpick thingy that always gets lost. We can’t forget those folks who just love the internet, the internet everywhere has a lot of allure. And you’ve got the gamers. Yep, the iPhone can be a lot of fun and it is a viable gaming platform. Well, that should cover… Wait, there is one more kind of iPhone user. Those obsessed with twitter. You can follow me on twitter at Applehacks or you can follow someone with a Twitter problem at HadleyStern.

All those are great reasons to use the iPhone, and reasons you can stick with. With the exception of games. Games on the iPhone follow a particular progression. You’ll start out with a free checkers app or something and then move up to a chess game. The next thing you know you are knee deep in iPhone games and the twitter stuff, the e-mail and the internet are all taking the back seat because if you could only beat level four you would finally be happy. Which is why iPhone Matters links to this next list with a lot of trepidation. We don’t want to be the ones to send down path to iPhone game addiction where one day you’re a successful VP and the next time you look up you’re next to a sign that says “iPhone gamer, out of work, will work for games”

Now that you know the risks we can point you to Sparsham.com’s list of the 20 most addictive iPhone games. Don’t blame us if your foray into gaming ends up with an appearance on one of those Intervention shows or something. We warned you.