In that case the explanation could be this : each actor (including player) store its position using 16-bit variables (thus only -32767 32768 range is possible) Do you mean that above a certain boderline your player position get clipped and you cannot reach some actors ? I'm not sure to fully understand what you mean. Is this just the way the viewer is rendering the game? When I tried doing some more wrapping around with all objects visible, I noticed that some of them look like they're beyond the wrapping point completely, i.e.