Videogame Ivan: Level I, Level II, Level III

In the last few days, Ivan's level of activity and intensity has drastically increased.

It's a bit like a video game.

Level I was when he started walking slowly and carefully.
Level II was the summer when he gained confidence in his step and started running around.
Now, we've transitioned into Level III. He's non stop, unstoppable and daring. In retrospect, I guess the transition into this new level started when he started climbing onto furniture.