So what is the most important aspect of a game?, art game, casual game, whatever...
Is it visuals over gameplay?
gameplay over story?
story over visuals?
Or like a lot of people, all of the above. I don't like the influence these meme games have on the industry, before long we'll all be little girls wandering around on our own - going oooh, look at the pretty rock textures, and forgetting about shooting stuff or doing stuff or anything that the designer didn't already script for us to do.
I said it some time ago, but indi games and commercial games need to stay separate. It's as simple as that - leave indi developers alone to make games like Amnesia, Minecraft, and Dear Esther. There is a market and a demand for games like Dear Esther, but it's a niche - people aren't looking for games that play like Esther, they want interesting experiences - whether that's exploring a glorious cave, or shouting at dragons, or flying a jet in a FPS.
Not all games are art, for that to be true, all art would have to be art, and all art certainly shouldn't be considered art. Lets not throw around terms that just don't fit - videogames are not art - just like walking through the fricken woods is not art. Videogames are a simulation of an experience, they don't represent real life, although some do a good job of mimicking real life, or presenting a believable metaphor for it. It's only because Esther is a new experience (ish) that it might conjure some reaction, some emotion - before long these games will be just like any other dull videogame.