Serious Sam: The Retro Encounter Beta [ Launch Trailer ] - Serious Sam: The Retro Encounter

Serious Sam: The Retro Encounter is a freeware mod for Doom II that recreates the signature wave-based combat and frantic action of the Serious Sam series. Players face relentless enemy hordes, utilizing a variety of weapons to survive escalating challenges in a custom campaign. Its core gameplay loop focuses on constant movement and strategic engagement against overwhelming odds, aiming to deliver the over-the-top, arcade-style shooting experience that defines its inspiration, with an emphasis on balanced multiplayer.