The Alternate Life Machine was a dimensional travel device invented by Gyro Gearloose.
Description[]
The bulky Alternate Life Machine was created in 2003 by Gyro Gearloose. It was powered by a set of exotic Time Particles that Gearloose had somehow “captured”. If pointed at an individual, the machine would open gateways to a randomized set of Parallel Universes where certain elements of that person's life had gone differently, leading to a vastly different present.
The travel seemed to only be a mental one, with the user ending up inside the body of their counterpart, complete with all the counterpart's muscle-memory. The A.L.M. came with a remote control, on which pressing a button allowed the dimension-hopper to return to their home world.
As the Time Particles were extremely volatile and wore out after a single use, the A.L.M. was only ever used once, in 2003, by Donald Duck (who travelled to Sir Donald's World and Soccer Donald's World, two parallel timelines where he was a rich nobleman and a star soccer-player, respectively). It is unknown if Gearloose later dismantled the now-useless machine, or if he kept it around in the hope to use it again if he stumbled upon some more Time Particles.
Behind the scenes[]
The A.L.M. was only ever seen in the 2003 story Donald Duck and the Alternate Lives.