Short answer
No. The official FAQ identifies Dimraeth as a co-op RPG for solo players and small groups of up to eight people, not a world filled with large numbers of random players.
Why the distinction matters
Expect a personal or friend-hosted adventure structure rather than public persistent zones, automatic mass matchmaking, or MMO-style population systems.
Set the right expectation
Choose it for a cooperative fantasy RPG loop with people you know or invite. Re-check the live game for exact matchmaking and social features.