The GameInfant is ever so nostalgic. It was one of the few things I could do in a car without getting carsick. Not sure why.
I particularly liked the jumping over posts minigame. I definitely remember staring out the window like that, and controlling it with mouse movement is such a good way to capture that.
The annoying the sibling bit felt a bit straightforward. Maybe the target could move each time?
Overall, this was charming, and very well executed!