Have gun durability decrease with use. Give guns a chance to jam, which depends on the specific gun and the guns durability, which needs to be repaired to unjam. Guns found on zombie corpses will commonly be found jammed.
Add in ross rifle, with extreme accuracy, but high chance to jam Even at full durability and a low chance to explode like a frag grenade in your face when the guns durability is down.
Make Bob semples buildable, along with tzar tanks.
Launching a nuke silo nuke has a microscopic chance to summon azathoth, killing your character and resetting the world.
Make text for using probability engine while stoned āYou swooce right in!ā
Making me a forum moderator.
Any bad ideas I missed?