Actual gamer is someone who plays games for pleasure e.g. the customer. I added the for pleasure so that game tester or somebody similar who do not like the games much but do it to pay food does not count as gamer.

I know that some people put more limits on the definition (minimum number of hours played, type of game etc), but I did not meant to do so for the purpose of my previous comment.

Real game for me would be something that requires more activity from player then just passively experiencing it. Either some skill based challenge or puzzle and possibility to fail or at least get week score.

Not a game is not necessary derogatory descriptor. I love reading and watching movies, but neither are games. Comics read on phone or laptop is not a game, but you click things to turn pages and occasionally have to think to put together clues. A thing can be interactive experience (e.g. not game) or whatever and still be fine.

I'm ok with the fact that there will by grey zone between games and non-games. If you say "X is somewhere between game and non-game" you still conveyed much more of useful information then as if you lump everything with pictures into large group "game".