You CAN delete game save data in Pac-Man & Galaga Dimensions on Nintendo 3DS, Namco Bandai has confirmed.
To do so, you need to press "ABXYLR" when you boot the game.
Last week Wired reported it was impossible to delete game save data in the arcade game compliation.
Yesterday that report was confirmed by a Namco Bandai representative talking to Shacknews.
Today, however, Namco Bandai said it is possible to delete game save data.
"There has been a miscommunication at our level," the publisher told Eurogamer. "Thanks for your understanding."