Ok, as promised, I've tuned up sixty second shooter a bit. The main goal is to make grabbing power-ups less frustrating - Tomo's biggest issue with the game as it stands.
I also discovered an exploit: one could play in a long, flat window and see the whole board and know where all the power-ups spawned. I don't know if anybody was actually using that exploit but I fixed it anyhow - part of the game is supposed to be exploring the unknown, so if one can see the whole board, that's not the experience I had in mind.
It raised a problem though - no matter what I did, I was going to make some window aspect ratio optimum. At first I said, "Okay, let's just use the longest dimension as the cap." But that would incent people to play in a square window, to see as much as possible in each direction. I want to incent full-screen play. But monitors are different sizes. I ended up with a compromise: about a third of the visitors to the site are 1.8; about a third are 1.6; and about a third are 1.4. So, 1.6 it is. Not optimum for my display (16:9) but close enough that I'd still rather play full-screen (and not misclick off screen.)
Anyhow, Tomo, what do you think?