Every week, I try to pick a game and some other useful utility for my iPhone apps post, but this week I can't help but write about two games. What can I say? They keep coming out with great games! The two games are from completely different genres so if you like games at all, I'm guessing at least one of them will find their way onto your iPhone.

This week's apps include a well-designed Jet Ski racing game and a unique word game that's challenging and makes you laugh while you play.

Choose words quickly to get as many as possible for high scores. (Credit: CNET Networks)

WordFu (99 cents, introductory price) is a fun and challenging word game with a unique Kung Fu twist. You start with nine letter dice and you're allowed to shake your iPhone to get new letters or swipe a die to switch single letters. When you're ready (there's also a time limit on this phase), your round begins and you must use your letters to create as many words as possible until time runs out. To make a word, touch each of the letters, then flick your wrist to enter it. As you spell more words, you'll be given bonus tiles you can touch to get double word scores, freeze the timer, and more.

What makes WordFu both challenging and funny are the Kung Fu "Hi ya!" and slapping sounds as you complete words. Once you feel you've mastered the art of WordFu, you can play against your friends over local Wi-Fi or compare your scores with the high score list. Caution: this game is addictive.

Aqua Moto Racing
Tilt your iPhone to steer and get the best line around the buoys. (Credit: CNET Networks)

Aqua Moto Racing ($2.99) lets you jump on a personal watercraft (pwc) and race around beautifully rendered tracks. Start off on easy courses with soft turns to get a feel for your pwc. Go for the best time by following a tight line and using the boost to earn medals and open up new tracks. Later tracks include jumps and with a flick of your iPhone, you can pull off several tricks of varying difficulty to earn more boost time.

When I first started playing this game it immediately reminded me of an old favorite on the Nintendo 64 called Wave Race. With several tracks, difficulty levels, and complex tricks to practice, this game will have a lot of replay value. The graphics are excellent in Aqua Moto Racing and a well-thought-out gaming experience make this title a must-have for racing fans. If you want to try before you buy, check out Aqua Moto Racing Lite (link launches iTunes) at the iTunes Store.

What's your favorite new iPhone app? Got a game for me to try? Is Aqua Moto racing extremely hard once you get to the slalom courses (it is for me)? Let me know in the comments!

Jason Parker has been at CNET for more than 13 years. He is the Senior Editor in charge iOS software and has become an expert reviewer of the software that runs on each new Apple device. He now spends most of his time covering Apple iOS releases and third-party apps.