*Similar to means:

• a non- or minimally-invasive technology to connect to the virtual world exists (minimally invasive meaning no cutting open your skull, no devices which can't be removed or exchanged/upgraded).

• the world and controls do not need to be as sophisticated as SAO, but the experience should feel like as it would be sensed in the real world

• the same goes for acting in the virtual world

• this excludes VR applications with screens, exoskeletons etc. no matter how sophisticated they are