We've made a large number of game prototypes on a variety of platforms and learned a lot along the way, but unfortunately struggled to find development deals that were right for us. With Zendoku, we didn't decide specifically to make a DS or a PSP game. The important thing for us is to make a good game and choose the right platform for it.

Zendoku is perfect for DS because it's a vibrant, colourful, fun Nintendo-style game. The sudoku gameplay is perfect for the stylus and the attacks are more fun on the DS with a stylus than without. Equally, we feel PSP definitely needs more fun, casual games that are pick-up-and-play, so we've developed another version of Zendoku especially for it.