"Fallout" developer Bethesda has announced that Automatron, the first-ever "Fallout 4" DLC, will be released on March 22. The game studio also released a trailer teeming with brawling robots to show how fun and exhilarating the upcoming add-on is.

The Automatron "Fallout 4" DLC centers on a new enemy called Mechanist, who let loose a flock of evil robots in the Commonwealth, including one called Robobrain. Players will need to track down these mechanoids and can even collect robot components they could use in building their own robots.

In assembling android companions, "Fallout 4" players have tons of mods to choose from. They can opt for mixing together limbs, armor, abilities and weapons "like the all-new lightning chain gun." Paint schemes and voices are also customizable.

Automatron is priced at $9.99 and will be released to the PS4, Xbox One and PC. Players ought to know that the "Fallout 4" DLC was designed for characters that are at level 15 and beyond. A closed beta for the add-on will be conducted prior to its March 22 release.

Beta invites have already been sent out to lucky "Fallout 4" players who will get to try the Automatron DLC early. As Bethesda's vice president of public relations Pete Hines said, the select gamers will help test the new content before it is made officially available to all players.

Those who received the beta invite for the "Fallout 4" Automatron DLC should get a redemption code in the email to be able to access the content. All the details participants need to know about the affair should all be included there as well.

Automatron is the first DLC to be released for "Fallout 4." It will be followed in April by Wasteland Workshop, which involves taming or battling live creatures, and Far Harbor, which centers on the search for a young woman and a secret colony of synths.