For my digital game, I recreated virus and called it computer Virus. I used Game maker for the game, and a lot of error checking. It was kinda crazy to make, and in the end, I deleted half of it because it just made the game annoying. But for as simple as it was, it turned out alright. And the playtest went well.
Also, as a note on Scratch I don't like it. Puzzles are cool, drag and drop code, interesting, but puzzle drag and drop not so cool.