It's only for the day though as the regular asking price of 400 MSP drops. This includes Sonic the Hedgehog 1, 2, 3 and Sonic & Knuckles.
"Sonic the Hedgehog is 19 years old, and we’ve worked with Sega to create some great Sonic style deals. This special Birthday pricing will be available one-day only this Thursday June 24th," Major Nelson on his blog, reports .
All drop from 400 MSP to just 240 MSP but it only happens Thursday the 24th, and is available to both Gold and Silver Xbox Live users. It'd be a great time to nab some excellent Sonic retro goodness if you haven't done so already for XBLA.