That's right since the Warzone Firefight Update the map has been broken and I couldn't fix it as the timers were broken in that update.
But luckily 343 has granted us with a fixed update which has broken everything else but the timers
So the gamemode is now working again but there has been a few augmentations to the maps original.
Updates:
There is no longer a Simon, the map is now handled using a Random Generator which chooses the colors that the will be displayed and removed.
The Gravity Hammer has been updated to a REQ Gravity Hammer.
Two nooks have been added allowing players to stand on them as a Temporary Safe-zone.
All dead players now respawn and can throw Grenades at the players still trying to survive.
Grenades now do a 150% Knockback.
etc... etc...
The map had a lot of updates so I excuse this long Update Note and I hope you enjoy the fixed version of Simon Says.