O~3 Entertainment's efforts to bring Radio Allergy to North America have been slowed, slightly. The throwback shmup will be delayed a month, now scheduled to ship in limited quantities on March 20 (available through Amazon). Hoping to unload its stock of the budget GameCube shooter as swiftly as possible, O~3 has wisely tacked on a "it'll play in your Wii" reminder (meaning: you'll still be piloting with your WaveBird).