At Good Old Games.
Don't know what the Gold Box series is? It is the first computer game I played that faithfully replicated the first edition rules of ADnD. Playing out Pool of Radiance was the first time +Dwayne Gillingham, +Tim Shorts and myself actually played ADnD together. Since it was turn base we could switch playing our individual characters during combat along with the deciding what the best course of action for the rest of the game.