It will be great if Unity Supported Google Glass!
That way your game can see the extra market of nobody.
Ba-zing.
I suppose the more logical way would be to wait until its a big thing with killer apps then support it?
I typically don’t balk at expensive toys but damn… Google Glass developer edition $1500 looked to cost more than my GTX Titan video card. I’ll pass. In this, the early adopter price is too much for me personally for that product.
Look at the bright side, your target audience definitely has money to spend on frivolous things 
Who says that Unity does not support Glass?
You can run a unity android app on google glass with some creativity. I got an invitation code and talked with a friend who has one and he’s gotten unity builds onto it. You have to install the glass extensions in your android SDK.
In comparison, the Oculus Rift DK2 is only $350. (Not including delivery costs + tax though, but still a huge difference). I wonder if the Glass is genuinely more expensive, or is it only because they can?
Not sure it would be wise to spend any resources on supporting this DOA product, which no one apparently uses in the wild. Note, how even Page wasn’t wearing it during his last appearance. 
No offence here, but Glass is simply extremely limited when it comes to hardware capability, apart from the fact that there is literally no market for it. This would be like asking for Blackberry support at this point in time.
I do think the rift 2 kit is a better buy, but there are a lot of sensors on glass. It can detect an eye wink for example. But yeah it’s not for the masses.
Things like this are the future, there will be a market eventually, I just don’t see it going mainstream until your glasses lenses are the screen instead though.