No native split-screen is available, multiplayer is online only.
Some Switch players got creative using Docked mode and local streaming, but it’s unofficial and laggy.
No plans announced for Couch co-op, dev focus remains on cross-play stability.
Local co-op mod exists on PC, but using modded clients voids VAC and could cause bans.
Player demand is high, but implementation isn’t simple due to network architecture.