Great game, I recommend it too everyone, just too many dead people (zombies) to kill

But sadly, shooting at these invisible zombie people forces them to take out guns and shoot back at me

The people will all be killed and the town is forever under undead control

You could TRY the multiplayer, but let's face it, most people online are morons and would rather be self-satisfying jerks than play a game the way it was intended

I wander into a town that is infected and all I find are invisible zombie people (no bodies, just clothes) walking around being shot at by invisible survivors on horseback