Chalkos Similar to the game of horse played with a basketball. One target area was determined for where the individual would jump. Each player creates a different-sized O with their chalk and then attempts to jump into the circle. Things needed to play: Chalk Players: 2 to 10 Determine a place to jump from. Draw circles of varying width to see if you can jump in them without falling. Earn a letter if you miss. You are out when you get to Chalko. When I was a wee lass I would draw circles on the ground then try to jump in them. Mary and Hannah and I would draw different sized O’s on the sidewalk, and whoever could confidently jump in them without falling out won.