From Press Release:
New Blood Interactive has released a free DuskWorld (DUSK Multiplayer) closed beta for the upcoming retro shooter, DUSK. Fans don’t need to purchase DUSK to play, they just need to head over to Discord.gg/NewBlood and sign up because that’s how metal this all is.
DuskWorld players will get the chance to own their friends via “Duskmatch” on 5 maps with the ability for players to host and join their own games directly via Steamworks.