Prismata is currently free (to keep) on Steam. Offer expires Monday May 21st 10AM PDT.
Clicking Install Game should be enough to get it registered to your account.
https://store.steampowered.com/app/490220/Prismata/
https://www.youtube.com/watch?v=L0-p6ZjzPHg
Clicking Install Game should be enough to get it registered to your account.
https://store.steampowered.com/app/490220/Prismata/
https://www.youtube.com/watch?v=L0-p6ZjzPHg