Bounty Bob Strikes Back! is the sequel to Miner 2049er and was initially released in 1984 for the Atari 8-bit series of computers. It was later ported to the Atari 5200, Commodore 64 and ZX Spectrum in 1985.
Gameplay is similar to Miner 2049er in that the player must inspect every section of 25 mines within a set time while avoiding mutants. One improvement to this sequel is after losing a life, sections on platforms remain covered and destroyed enemies do not reappear, thus making it easier to complete a level.
Source: Wikipedia, "Bounty Bob Strikes Back", available under the CC-BY-SA License.