Nintendo: Chibi Robo. Imagine Toy Story, but a video game, and you're a little robot that helps the family around the house, and also saves it from falling apart, and also stop an evil plot, and other crazy things.
Sony: Ape Escape. Doesn't anyone remember this anymore? It was fucking awesome. Good enough to get into Playstation All Stars, but hasn't seen a proper game in a long time.
Microsoft: Um...Alan Wake, I guess? I hear people mention this game now and then, yet I've never heard of it. Looking it up, it does sound interesting, and it's a genuine Microsoft 1st party IP, so I'm surprised we don't see people talk about it more.