I don't know if you've experienced it yourself or have heard other reports of it, but after playing your game for a few hours last night I've been experiencing a 2048-flavored "tetris effect" all day today. My brain keeps on trying to identify "like things" to collapse together; pretty wild.

I had this a lot while developing 2048. At some point, I'd feel like I could collapse letters while typing, and that's when I decided I should probably stop playing so often.

Me too, I have this weird overlay of the game in my vision. It took a lot more of tetris to reach that effect.

All the fonts seem smaller, not sure if only one.

Assuming you mean all fonts everywhere, I got that too. I thought the next website I looked at went through some kind of redesign until I realized that the next two websites I looked at also looked like that.

I'm getting that as well.

I've won once.

The 'technique' I used was to keep the numbers on the left hand edge.

Then using left, down and up built up the rest of the tiles with the movement to left hand edge being the preferred move when it is possible.

I've not managed to repeat the victory yet though.

I'm getting the same thing. All the text in my Chrome window looks microscopic after playing.

I played for about 2 hours right before bed and couldn't get to sleep for hours. I was wired. Don't know if this is related to what you're suggesting or not, but I won't be playing this game again at night time.

This happened to me during my commute. I was visualizing stacks of cars smashing together and disappearing in front of me. Very unsettling.

I used to get that with other games such as Amplitude on the PS2. I'd close my eyes and my brain could see the game being played with incredible detail. It's happened to me with other games also. I think of it as a type of mental burn in. Goes away after a while.