Atlantis series was a french successful series of "Point&Clic" games, following the legacy of Myst.
When I joined the team the original crew was quite split up, mostly due to the mmorpg quick expansion.
There was only one developer left, and I helped him to create the installer of the game.
I wrote some logic lines too, in LUA script.
I did a lot of playtesting of course, with the golden rule of "no cheat, no debug console":
that keeps me doing the game from the start by heart always faster and faster !
Yes I can tell you that I was speedrunning at that time...