"NamCollection is a collection of 5 PlayStation games by Namco in 2005 to celebrate their 50th Anniversary. It was only released in Japan. Its name is a portmanteau of "Namco" and "Collection."
It includes: Ace Combat 2, Mr. Driller, Tekken, Ridge Racer, and Klonoa: Door to Phantomile."
Source: Wikipedia, "NamCollection," available under the CC-BY-SA License.