Image sitting in a square area.

The walls are white sheets to the 8" ceiling. They can be wider than 8", but not by much.

On the outside of this area are 4 projectors. The projectors can simply be a 4 way split of a single video source or can be driven by some intelligent software to maximise the wraparound effect.

Of course, there will be all encompassing sound.

My attic is big enough for this.

I have 5 projectors. I kept losing them to storage during the move, and picking up another or 2. Now I have them all back in 1 place.

Off to buy some sheets.