Note: This is concept software! Interested in available 8-bit/DOS modelers? Check out Magicvoxel, 3D Studio DOS, or Mikshape3D! Game developer Johan Peitz posted a tweet recently with a video of a project he’s working on called “PICO CAD”. It’s a kind of 8-bit 3D modeling system to develop very simple 3D objects. We don’t yet…