Dwarf Fortress Computer
Earlier this year my friend showed me the game dwarf fortress. Dwarf Fortress is like nethack but you control multiple dwarves. You create a dwarven colony. My dad showed me this.
It is a computer made with dwarf fortress parts it has 256 bits of memory I was really amazed by how complex it is. The creator spent 35 (game) years making it. It has 141 levels and a pure gold spire. It really is amazing.