Not sure which thread this might fit in but just saw a link in a blog post
I feel some people here would like it, and maybe could suggest other variants that could be hosted 
(Or imagine if OGS did a collab to host Crazy variants 
- I know it’s probably not even near the urgency or heavily requested list)
There was a young guy streaming with an older guy (beard and glasses (possibly named Dave (not Dave89))) several months back. He mentioned a variant where one color begins with a solid square perimeter already surrounding, I think he said, 13 lines. The older guy says “Oh, you’re talking about skyboxing; we did that in university but back in my day we did it with 9x9.” If the underdog makes a living group inside, they win, regardless of points.
I got to thinking about it - seems like a fun variant, maybe as a training exercise for people wanting to practice either invading or defending a large area. Allowing for game setup with variable size skyboxes could facilitate a natural handicap effect.
It’s not really a Go variant I suppose, just Goesque.
Something like this? It looks like there’s quite a few “White to Live” variants described at Sensei’s library.
As always, there’s an open invitation to implement this at govariants.com, but actually I think this variant can be played just as well at OGS using the “Fork game” feature. Of course black needs to agree to resign once white lives, but I don’t see an easy way around that regardless of the server!
This is a category which sparks imagination.
Some OGF related reading 
and then similarly
(^^ slightly sad some of the videos in this thread went private)
Also Antti Tormanen gave a lecture recently enough
You can also set Komi to 360.5 (292.5 if you subtract the 4 * 17 stones on the edge) points, then any stone that lives is enough for white to win.
Here is a handy dandy tool for starting games like this on OGS.