Grimace's Birthday

Grimace's Birthday is a 2023 browser-based platformer game developed by Krool Toys and published by McDonald's. The game was a promotional title released to coincide with the launch of the Grimace Shake on 12 June 2023. Development of Grimace's Birthday used GB Studio, a tool to create games compatible with use on Game Boy hardware, although the game was not a Nintendo-licensed title and did not receive a physical release. Grimace's Birthday was positively received, with several critics directing attention to the unexpected theme and medium for a promotional game and the strong likeness of the game's visual presentation to Game Boy titles.