Using this minecraft redstone schematic, you can add traps in minecraft that will go off when you stand on top of them! Rogueclownfish has made traps from Pixel Dungeon and ported them into minecraft.
YouTube on MSN

Safe Minecraft base

This video shows a clever Minecraft base design that uses a Nether portal as a simple defense. A player leads a large group ...
A Minecraft player has found an impressive way to prank their friend using a TNT and Observer trap build. The trap design utilizes multiple parts to create a domino effect without harming the player, ...
Minecraft lava is undoubtedly one of the worst surprises to stumble across in the sandbox game. You can be happily walking through a system of caves, just minding your own business and maybe trying to ...
Minecraft’s Update Aquatic introduced yet another way to protect players’ property with a trap that shoots out fish at startling speeds. The new fish cannon trap that’s been pioneered with the first ...