Play enough epic games (epic, in this case, being anything over about 25 hours or so) and you’ll eventually come across a section that turns into an entirely different game. Playing a vast role-playing game? Watch as it turns into a rhythm game for 20 minutes. Playing an action-adventure game? Recoil in horror as it turns into into a real-time strategy game for a stretch.
I haven’t actually figured out why this happens, maybe the developers think that I’m going to get bored playing the game and they throw something in to break up the action, or maybe they had this great idea for a different game waiting in the wings but couldn’t flesh it out to make it its own game, so they crowbarred it into this one instead, I don’t know.
But what I do know is that I do my best to minimize the experience, power through the cross-pollination and get back to the game as soon as possible. I mean, I started playing a game because I wanted to play, say, an RPG, not a rail-shooter.