Sesame Street 1 2 3 Astro-Grover & Ernie's Magic Shapes Sesame Street 1-2-3 is an educational Nintendo game. It featured two different games: Astro-grover, and Ernie's magic shapes. In Ernie's magic shapes, you had to match the right symbol to a base symbol. Astro-grover was a simple math game. It was developed by Rare, Inc and published by Hi-Tech Expressions.