10 Multiplayer Mistakes Every Unity Dev Makes

Making multiplayer in Unity? Don’t fall into the traps most devs hit.
In this video I’ll break down 10 common networking mistakes Unity developers make—from scoping too big, to over-optimizing, to treating networking like a plugin.

Whether you’re new to multiplayer or already building your first online game, these tips will save you months of frustration.

✅ Learn how to debug networking logic the right way
✅ Avoid wasting time on lobbies, perf, and anti-cheat too early
✅ Understand how to start small and actually finish your game

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0:00 Intro
0:16 Build to learn
1:12 Too large scope
1:40 Caring about performance
2:22 Assets & tools
3:03 Rushing a Lobby setup
3:45 Debug with the logic
5:19 Join the Discord
5:34 Anti-cheat in multiplayer
6:44 Assumptions kill
8:13 Treating networking as an addon