Someday Pikachu and friends will have to stop following Ash Ketchum around the world, retire from battling and get a real job.

That’s part of idea behind “Ojimon,” a new mobile game that is a portmanteau of ojisan (middle-aged man) and Pokemon. Using “ojiballs,” players can catch aging pocket monsters, who have disturbing Kobito Dukan-like faces, and make them do their bidding.

Players can put their new Ojimon to work in gold mines and construction sites, but they’ll need pay attention: These Poke-oldies have a tendency to doze off on the job but can be woken with a quick jab on the touch screen. If enough gold is harvested, players can build roads to the next town and find new Ojimon to catch.

The game includes the original 150 Pokemon, with graying versions of Charizard, Haunter and Gyarados. Even though it’s not as exciting as battling wild monsters, your Ojimon can still gain experience points through their menial labor and evolve into more powerful forms, albeit with the same sad, unshaven faces.

For an extra laugh (or to avoid copyright infringement), all of the monsters have been given punny names. For example, Fushigidane (Bulbasaur) has been renamed Oyajidane.

“Ojimon” is available for free on Android and iOS.