Sony has put up their chart for the top 20 best selling PSN games of last month. I actually thought Sonic 4: Episode II was going to at least come in at the top 3, but actually came in at number 5. Recently Sonic brand manager Ken Balough stated that Sonic 4: Episode I actually sold best on PSN, then XBLA and lastly Wii (which this one is not available for).
Want to see the top 20 list? Hit the jump. Note this is from the US Playstation blog, so probably only counts for US PSN.