Technically it's not so much a "Homestuck game" as it is a game set in the same world with trolls and some references to The Big Homestuck. So Homestuck doesn't necessarily imply much about what the game would be like.
Of course, Hussie did promise to Try Some Novel Things In The Medium Of Adventure Games, but that's also what he said about Namco High as a visual novel. And that turned out to be an extremely linear game where your only options are "okay who should I talk to," except for [HOMESTUCK SPOILER CHARACTER??] being all meta. Which tells me Hussie wasn't actually very familiar with visual novels and the ridiculous stuff they've already done.
