There's a new Game Boy Color game that was made I guess in partnership with McD's called Grimace's Birthday. You can play it in your browser at https://www.grimacesbirthday.com or download the actual ROM file from archive.org and play it in an emulator of your choice. I did a couple speedruns of it and it seems fun. You can beat it in under 5 minutes. It'd be cool to see a category for it here on the site.