recently my sister introduced me to the game minecraft, which is a sandbox game where you can build anything (and everything) you want to build. right now i have a free standing house with 3 stories: ground level, kitchen, floor 2: bedroom, elevated area, floor 3: look out. i also have a tower nearby with a bed, and basic suplies. i have a tunnel connecting to my house, pit (monster trap), mineing shaft, supply room and farm.
in minecraft during the day all is peaceful but when night comes monsters come out of caves and will try to kill you if you don't have a shelter of some sort, whether it is a free standing house or a cave of some sort or even a hole in a mountian.