And here we go again... This small game is version of a puzzle game that was made in the 80's by Binary Arts, there were quiet a few variations of this puzzle made. But the principle is the same for all of them.
The original Top Spin consisted of discs numbered 1 to 20, my version has all the letters of the alphabet adding 6 more discs to the puzzle.
The puzzle is solved by moving all of the discs around the oval track, and spinning the top piece by 180 degrees to reverse the order of the 4 discs in the top piece.
There isn't much else to this puzzle, but actually solving it can be quite tricky. More often than you'll sort the discs with ease until you reach the last 4, which unless you're lucky will be in the wrong order. Getting them in the right order isn't easy.