My first was Pleurghburg, and back then I didn't even know it was made with AGS. But I loved that it, despite of it'S simple graphics, managed to create an atmosphere commercial games often lack. After I found out about AGS, my first games, I suppose, were the Ben Jordan series (4 had just been released back than) and 5 Days a Stranger. Oh, and 6 Day Assassin of course. Still I great one-roomer.