Red Green by Sebastian Mihai is an Odyssey2 homebrew tech demo. It is a simple program which lets the player move an animated red car, while green people are flying by, giving the impression of movement. Read more about Red Green (08-04-2015) (Odyssey 2 Techdemo)
Simon the Snake by nitrofurano is a twist of two well known concepts. It puts the games "Simon" and "Snake" into one pot. Just go ahead and try it on your own, it's pretty entertaining. Unfortunately as of now there is no scoring system yet. Read more about Simon the Snake v1.00 (Master System Game)