Hello!
I was just running my 1st homemade zombies map and found that the gamemode wasnt playing

after launching the map, the map loads in and I have a floating freecamera to look around

I have an info_player_struct, as well as 4 initial_spawn_points

what am I missing to get the game to play?

did you build your mod? i actually experienced that yesterday as i was making another map and i built my mod and that fixed everything. If that doesnt work, recompile everything including the patch