Free downloads were historically offered as promotional updates for previous owners of the Xbox 360 version when moving to Xbox One, but these offers have largely expired.
While "free download" is a popular search term, Castle Crashers (Incl. Multiplayer) Free Downlo...
The game frequently goes on sale on Steam for as low as $3.00–$5.00. Multiplayer Features Castle Crashers (Incl. Multiplayer) Free Downlo...