If you own Call of Duty: Ghosts for the PlayStation 4 or PlayStation 3 you can try the game’s Onslaught DLC for free this weekend.

The free trial period started yesterday, and will last until Monday, April 28 at 10 a.m. Pacific Daylight Time.

The Onslaught DLC pack contains four new maps–Fog, Bay View, Containment, and Ignition–and the Maverick dual assault rifle/sniper rifle. Fans of the co-op alien-fighting Extinction campaign, such as GameSpot’s Shaun McInnis, will also be able to play the first chapter of the four-part DLC campaign.

If this offer sounds a little familiar, it’s because Activision, which has an exclusivity deal with Microsoft, gave Xbox One and Xbox 360 owners the same free trial back in March.

The Onslaught DLC costs $15, but you can also get the Season Pass for $50, which includes three more pieces of DLC.

For more on Call of Duty: Ghosts, check out GameSpot’s review.