Niki’s Adventures, I can say with authority, is the only online video game starring a hummingbird.
It’s from the Virtual Museum of Canada, and appears to be in the “choose your own adventure” genre. You’re given various options for actions Niki the Hummingbird can take, or responses he (maybe Niki is a she?) can make.
It’s a fun language development activity for Early Intermediate English Language Learners.
I’ve placed the link under Word and Video Games on my website.