Welcome to the top 20. The end is in sight. The light at the end of the tunnel is getting brighter. Let's hope it doesn't turn out to be a horde of luminescent zombies. That's not as unlikely as it sounds, if you believe Valve. Click the hordes of slavering zombies below to begin. 100-96 | 95-91 | 90-86 | 85-81 | 80-76 | 75-71 | 70-66 | 65-61 | 60-55 | 54-51 | 50-46 | 45-41 | 40-36 | 35-31 | 30-26