[Xlythe]

The most addicting games I've played are the ones that deviate from the segmented, level-based gameplay seen in Angry Birds and Cut the Rope. You're competing in a saturated market against companies much larger than you. If you're determined to try your luck, then focus on style. Make it extremely dark and depressing or conversely witty with faux seriousness. Do something to stand out and carve out your niche. Polish your game. And most importantly, don't insult your users by making the game only completable with in-app purchases. To them, it's like lying. Find a way to make them want to spend money instead of feeling like they're being forced to.