Europe in 2007 and in North America and Japan in 2008, the 3DS in 2012, and for the Wii U in 2013. The Complete Works version of the game was made available on the PlayStation Store in both Japan and North America. An enhanced remake titled Mega Man Powered Up — known as in Japan — was released worldwide for the PSP in 2006. The game features a graphical overhaul with 3D chibi-style character models with large heads and small bodies. Inafune had originally planned to make Mega Man look this way, but could not due to the hardware constraints of the NES. Producer Tetsuya Kitabayashi stated that redesigning the character models was a result of the PSP's 16:9 widescreen ratio. The larger heads on the characters allowed the development team to create visible facial expressions. "The concept for these designs was 'toys'. We wanted cute designs geared towards little kids ... the kinds of characters that you'd see hanging off of keychains and such," character designer Tatsuya Yoshikawa explained. "Not only that, I made sure to tell the designers not to skimp on any of the original Mega Man details. We wanted their proportions and movements to be accurately reflected in these designs as well." As the size of the remake's stages are not proportional to those of the original, the widescreen ratio also presented the developers with more space to fill.Mega Man Powered Up features two styles of gameplay: "Old Style" is comparable to the NES version aside from the updated presentation, and "New Style" uses the PSP's entire widescreen and contains storyline cutscenes with voice acting, altered stage layouts, remixed music, and three difficulty modes for each stage. This mode also adds two new Robot Masters (Oil Man and Time Man). The NES version was originally intended to have a total of eight Robot Masters, but was cut down to six due to a tight schedule. Additionally, the remake lets players unlock and play through the game as the eight Robot Masters, Roll, and Protoman. The New Style stages differ in structure from that of Old Style, with some pathways only accessible to specific Robot Masters. Mega Man Powered Up also features a Challenge Mode with 100 challenges to complete, a level editor for creating custom stages, and an option to distribute fan-made levels to the PlayStation Network online service. Mega Man Powered Up received generally positive