Hey Itizso, thanks for your input here.
Strangely the day I posted my previous comment asking Evan about streamer visibility / discovery, this game got it's first YT play vid :P The last 2 days have seen 12, 19 & 44 views respectively. Far from mass appeal but it's looking positive. I think polishing up the game page + gifs would help a lot here.
I gave some thought to your games getting attention. In my mind there are 3 reasons a streamer picks up a game (highest priority first):
1) They're getting paid by the publisher / developers to promote the game.
2) They think the game will be entertaining for their audience and/or help them reach new viewers.
3) They're personally interested in playing something and hope it will be entertaining too.
Based on my thinking, something being fun to play is always secondary to how entertaining it's content is to viewers.
In your specific case with Physics Practice, I think it's got a really cool thumbnail which pulls people to view the page. The page looks amazing, so almost everyone is going to stick around and try out the game. The web version and short play session length means almost no friction to people trying it out (probably a few times) and likely to return to it later and try beat earlier scores. I personally don't think the gameplay lends itself to being very viewer-entertainingness-friendly though, so I assume that's why it hasn't received the attention we're talking about.
I know what I'm saying here isn't particularly ground-breaking and you didn't really ask me for feedback but I figured I'd share my thoughts in case it's helpful in some way?
Oh and thanks for the Xanderwood recommendation, I've sumbitted Kickflip for a let's play :)