Hi everyone! I’m a Speeh and Language Therapist from Italy.
I occasionally create simple games for my little patients (and share them for free on the web). This is my last work, I’ve done it in 2 days (graphics too): there are two teams and you have to press the wheel and click on the image whose words starts with the letter pointed by the arrow (in Italian, sorry). Further improvements: I’ll create a function to re-generate the items 
Hope you’ll like it! http://www.trainingcognitivo.it/?p=2500
Very good idea, the only thing you can improve are the graphics i think