I don't believe it's currently playable, yet. But if you go on the discord (linked in the videos) and ping Claris, she'll probably pretty happily bombard you with videos of its current state and progress updates.
And as a more general point, having played all the entries, I can fully recommend keeping an eye out for the future videos, or just going playing the games from the game jam page, because there's so much cool stuff. Both from the perspective of the ideas of ways the genre can be taken and the simply impressive feats that the community can muster.