Now, there's no reason to complain about the exclusion. The NA version only costs a fourth of the price (10 bucks compared to the Japanese UMD's $38) for one third the content, and you can see from the math that it's not a bad trade off. This makes us wonder, however, if that missing content will be brought over to North America via expansions on the PSN. If the game does well, then why not?
And by the way, this ugly box art you see here is from the European UMD version set to come out in June. God, it is ugly. Couldn't emphasize that enough. Gladly, that's one bonus us North Americans have -- not having to see this every time we want to play echochrome.