Well, i have python to let me see my mouse, but when i give a cube the sensors:
mouse over, and left button, then a and controller connected to a replace mesh with the object i want to replace it with, when i start the game and and click on the cube it does not change the object to the one i want. Any responses are welcome.
Perhaps check the object bounds, also check to see if there’s another object that might be invisible, but is in front of it.
If all else fails, create an object that uses a simple script to position itself in front of the camera where the cursor is and use a ray sensor set to X-ray mode, then use Python to get the hitObject and change its mesh.