Before I even start to explore your dll, I have a serious question. As dll is creating the linked lists in memory, and its in a seperate threads. What provisions are there for a game save and game load. If in the middle of a game, a player saves his game and some time later he loads from the previous save. The entities table will be out of sync, and what if the player loads a already saved game. The pointers would be totally irrelevant. Please explain wether I am right or wrong in my apprehensions.