Regardless of the failure of later Neo Geo hardware, games for the original MVS and AES have been well received. The system spawned several long-running and critically acclaimed series, mostly 2D fighters, including "Fatal Fury", "Art of Fighting", "Samurai Shodown", "The Last Blade", "World Heroes", and "The King of Fighters", as well as popular games in other genres such as the "Metal Slug" and "Baseball Stars" series. In December 2012, SNK Playmore released a handheld console based on the original AES, the Neo Geo X. As of March 1997, the Neo Geo had sold 980,000 units worldwide. The Neo Geo Pocket Color also has been given praise for multiple innovations, and a very substantial library, despite its short life.