McDonald's surprises with new Game Boy Color game featuring Grimace.

McDonald's has released a new retro-style Game Boy Color game called Grimace's Birthday, featuring the purple milkshake blob Grimace. Developed by Brooklyn-based indie game studio Krool Toys, the game involves simple 2D platforming and skateboarding, and is short with only four levels and one bonus round. The pixel art is great, and the levels are cleverly designed. The game is meant to be played in a browser on a phone or computer, but it's also a fully working Game Boy Color game that can be downloaded and played on the original hardware.