notes-computer-ui-listOfInterestingUis
http://www.vatican.va/various/cappelle/sistina_vr/index.html
: easy panning
minecraft: said to be easy (i haven't looked at it yet)
world of warcraft: said to be easy (i haven't looked at it yet)
https://play.google.com/store/apps/details?id=com.shortbreakstudios.collider
: easy, somewhat tempest-like
https://play.google.com/store/apps/details?id=com.gamevil.elements
: easy
hypercard: easy authoring
robotek
https://play.google.com/store/apps/details?id=net.hexage.robotek.hd