Namco today announced Namco Museum Battle Collection for the PSP. The compilation will be released with U.S. exclusive titles this summer and includes classics like Xevious, Bosconian, Mappy, Tower of Druaga, Dragon Buster, Grobda, Dig Dug 2, King & Balloon and others, up to 20 titles. Check the press release for more info and this nice batch of screenshots.