Dung Beetles is an Apple II maze video game written by Bob Bishop published in 1982 by Datasoft.
[1] The gameplay is similar to Pac-Man, but a portion of the maze around the player-controlled character is enlarged as if being viewed through a square magnifying glass.
[4] In 1983, Datasoft moved the game to its Gentry Software label with another name change: Magneto Bugs.
Softline found the magnifying glass "an impressive programming feat," and concluded that it was "a solid game ...
[6] Writing for ANALOG Computing, Marc Benioff called Tumble Bugs, "an outstanding variation on Pac-Man".