The main idea behind this project is to give an approximate percentage of memory usage. Psychologists divide memory into 3 stores. 1. Sensory store 2.Short term store 3.Long term store. After entering the sensory store, some information proceeds into the short term store. From there some information proceeds to the long term store. These stores are referred to as short term memory and long term memory respectively. Here in this project we are testing short term memory of the observer.             In this project there are total 20 blocks. In that 2 blocks will have same object in it. So task is to find out those 2 blocks and swap them as quick as possible. Similarly with other remaining blocks. The memory usage percentage will be given on basis of swapping the block, that is how quick will they able to find similar blocks. In this project we have used simple computer graphics in build functions such as glTranslatef, glutSolidCube, glutSolidSphere, glutSolidTorus and glutBitmapCharacter and etc.Through this project memory power is measured and also the concentration and thinking  capacity of the player will increses.