I've just uploaded a Mac (Intel + Silicon) build for my LD51 game, Ten Seconds A Demon. I noticed that Safari couldn't open the WebGL build of the game (I used Unity, by the way). Firefox can open the game on Mac, but I thought many people in Mac only used Safari, so that was an important consideration.
It's kind of disappointing for me, because I think a point of WebGL is being able to not care about platform differences.
As for the game,
In 1988, 13 scientists accidentally summoned a demon in the Arctic. You are that demon. You possess a random scientist every 10 seconds. Unleash your wrath upon the mankind!