It's the year 33XXX, and aliens have stolen Olivia Run's Sega Master System, and she wants it back. Oh, and they also killed her boyfriend and emptied her fridge. That is the plot of Galactic Revenge, a homebrew platformer that plays similarly to Gremlins 2: The New Batch.
Watch as Darkman425 jumps across conveyor belts, deftly takes care of any robots and aliens he sees, and trades life points for more speed in order to beat the game in record time.
You can download a ROM of the game here.