How To Play Mann vs Machine With no Wait
Valve is a bitch. Waiting 40 minutes to enter a new game mode, only to spectate even longer is IRRITATING AS HELL. But I can show you how to get in instantly.
1. Instead of going to the "Play Co-op" tab, click on "Browse Servers."
2. When there, select the "Internet" tab.
3. Under the server list will be a box titled "Maps." Type "mvm_" inside it.
4. The servers have different info about them, one of them being players. Click the header "Players" twice.
5. Join a server with 1-2 people that is VAC secured.