Castle Crashers Remastered, a hi-res version of the popular multiplayer co-op game is available today on the Xbox One. The game was originally released on the Xbox 360 and has since made its debut on other consoles and PC.

The title runs for $14.99 on the Xbox Store, but for a limited time, those who owned the original Castle Crashers on Xbox 360 can download the remaster for free. Players need to be on the same active Xb0x Live Gold account to take advantage of this discount, and only have through September 20 before the game will cost them $4.99 to purchase again.

Here are some of the game's updates via The Behemoth:

-New multiplayer mini-game called Back Off Barbarian

-Five times larger texture sizes than the original!

-Twice the framerate of the original! (60 frames per second)

-Performance updates, gameplay tweaks

-Online multiplayer performance updates

-Ability to find games easier and quicker online