Super Smash Bros for Wii U & 3DS won't release simultaneously across both platforms because each one needs substantial bug-squashing resources, series creator Masahiro Sakurai has explained.
In his regular column for Japanese magazine Weekly Famitsu, translated by Kotaku, Sakurai noted that the 3DS version of the game is being debugged before its upcoming release.
"Checking is done both domestically and overseas, so for a game like Smash Bros., several hundred people are employed." Sakurai said. "So, debugging alone becomes a huge project. So much so that one of the biggest reasons for the separate release dates for the 3DS and Wii U versions was so that we could shift the debugging periods."
Sakurai noted that this is an essential process which is difficult to speed up, thanks to the huge number of variables which must be tested.
"Considering not only the different fighters, but items, stages, color settings, play rules, and game modes, the number of varying combinations are astronomical," Sakurai noted. "In order to properly debug, every pattern must be tried, but such a task would be impossible no matter how many decades or centuries you take."
A special 3DS XL Smash Bros. bundle will also be available at launch, featuring a limited edition red handheld with a Smash Bros. graphic on it.