Pretty much all the Sonic games on Xbox Live arcade are 60% off for 24 hours. That includes Sonic 4: Episode 1 (down to 320 points) and Sonic Adventure (also 320 points). Sonic 1 through 3 from the Sega Genesis are also down to 160 points, in case you still lack those classics. Those are some pretty sweet deals and definitely worth a look! Check out Major Nelson’s blog for more details.