Developers working on Wii U projects have counted the Unity engine among their options since last year, but support for Unity is still absent from the 3DS. Considering more than 42 million 3DS units have been sold worldwide, in comparison to the 5.86 million Wii U shipped to retailers as of January, Unity’s absence from the 3DS is puzzling. Unity support was added to Sony’s Vita in January, so doing the same with the 3DS would feel like a logical move if Nintendo wants to stay competitive as a host of developer-friendly platforms.