If you haven't heard about it yet then you need to check out the showcase thread of Seriously! community developer Mischievous. On December 10th, barring any problems, this mod will be released on the workshop for Serious Sam 3: BFE and an official launch day event will be hosted by Seriously! (specific time to be announced shortly).
So what is Screwballs? In simplistic terms it is a football/soccer-styled game built within the Serious Engine using Serious Sam 3: BFE as its platform. It is a team-based mod where you will pick Red or Blue and fight to keep the ball on the other team's side. The longer the ball is on the opposing team's side of the field the higher your score will go.
Everything takes place on the Delta Delta 3 mining colony, a harsh world that is slowly being terraformed into a massive gaming planet. This release of Screwballs marks the introduction of the DD3 world and there will be more coming.
The first release will feature two maps, created by Mischievous and Finzy, and a subsequent update will include one more made by Pan. Thanks to the powerful scripting system made for this mod it will be easy to create your own maps to add your own touch to this sporting experience.
Let the games begin!