In dungeon crawlers an item called a spike or door spike is often available. They jam doors shut so that only people on the user's side can open them. Do/can they exist IRL and how are they used?
(I first discovered them in Ultima Underworld and found out about the other games because I looked around after having googled them after seeing an old Minecraft suggestion for them I made. )
Cheers!
Submitted September 23, 2018 at 10:50PM by wolfboyft https://ift.tt/2DnVFDB