Well, there are several. Depending on what you mean by similar.
I'm making one myself.
http://helixprimegame.com/
When I try to play it through the webGL link I got:
Invoking error handler due to
SyntaxError: expected expression, got '>>' UnityConfig.js (line 76)
SyntaxError: expected expression, got '>>'
Code:
>>2];c[P+12>>2]=c[Ca+12>>2];c[ra>>2]=c[Ca>>2];c[ra+4>>2]=c[C
Worked after a browser restart though.
And the thing I always say: I wish there were hotkeys. Having to click all over the place is a pain for me.
I also see a lot of weird way the text is displayed. Like some letters are up or down a pixel higher or lower than they should be that made it awkward to read.
Other than that, I like how it's quick to jump into. The character changing stuff in the medbay after you already get started as an option smooths things out a lot.