Scratch is a good choice. My 10 year-old granddaughter was able to create her own game on her own. One word of warning--the concurrency model is not well expl

Scratch is a good choice. My 10 year-old granddaughter was able to create her own game on her own. One word of warning--the concurrency model is not well explained (or implemented) and so games can have race conditions that are difficult to debug.