Publisher Modus Games has announced that Trine 4: The Nightmare Prince will be launching on October 8, 2019, for $29.99. Available for all major platforms, this latest installment in the series will be released concurrently with the Trine: Ultimate Collection. That is a package that bundles all four games into one convenient box for you to get kickstarted into the world of Trine.
From what I saw earlier this year, Trine 4 seems to be in a good spot. A lot of care has gone into incorporating co-op in a natural manner, but to also not forget that some people like to play these games solo. I'm really taken by the dynamic puzzle adjustments, which work seamlessly with the drop-in/drop-out co-op structure. It's pretty awesome to see in action.