Comment by amonith

Honestly probably yes to all of those. Except for small children the dreams are probably also non-visual like in the case of blind people. They probably dream about "weird feelings" (chills, shivers, cold, heat etc) and smells and sounds and whatnot. The TST also assumes that some of the instincts are inherited from our ancestors (e.g. that uneasy feeling when you walk alone through the forest at night - because for thousands of years predators could kill you in that exact scenario) so a baby's brain might dream about those feelings too (probably without visuals, just chemically induced feeling of uneasyness).

And back to the screen scenario: To the brain "excitement" is also "stressful" from a chemical PoV. So if you really really enjoyed some game (as a kid or whatnot) you probably dreamt about it too.