Perhaps you are starting here or perhaps you tried parts 2 & or 3? Part 2 is a gravity simulation and Part 3 is slide puzzles both worth looking at and considering,... anyway, this is he original game that gave the others their look. you move the circle avoiding the blocks while collecting the emblems and then make your way to the finish line to advance,.. its a good time and besides what else are you doing, that you could be reading this. try it out, and then look at 2 and 3, & see which is your fav.
