Namco Classic Collection Volume 2(ナムコクラシックコレクション) is a compilation arcade game that was released by Namco in 1996. It is a collection of three popular Namco games - Pac-Man (1980), Rally-X (1980) and Dig Dug (1982). In addition to the original games, there are "arrangement" versions that include 2-player simultaneous play, additional enemies, updated graphics and music. Rally-X Arrangement did have 1-player only, unlike all other Arrangements. In addition the game New Rally-X (1981) is selectable as well. Pac-Man Arrangement is the most notable of the arrangement games.
Source: Wikipedia, "Namco Classic Collection Vol. 2", available under the CC-BY-SA License.