Big Mac: The Mad Maintenance Man (shown on the box cover as More Adventures of Big Mac: The Mad Maintenance Man and often abbreviated Big Mac) is a video game published in 1985 by Mastertronic for the Commodore 64.

[2] The player takes on the role of the title character who must negotiate a power station consisting of 18 separate levels (vaults).

On each level the aim is to avoid a range of defences and press switches to shut down the vault.

The music was complimented and overall the game was considered to be good value for money.

[2] The game was hacked by Gábor Herczeg and re-released as a freeware "sequel" under the name Big Mac II.