Detalhes Yes, they are. I think the first one is Cube Escabe: Arles.. The one with Van Gogh. There are also 3 extra games, but they are paid ones (Rusty Lake Paradise, Rusty Lake Hotel and Rusty Lake Roots)
so what is the proper order to play them:
1) Cube Escape: Arles2)....
You can start from "case 23". Then Paradox.
cubeescape.com has the order by release.