It's just a normal stock game or some mod added.
Some use the GTA V. director: http://kotaku.com/on-youtube-millions-watch-shows-for-childr...
The creepy thing is that this video is targeted at 0-3 year olds who randomly tap on mom's iPad. If you think like that now it's clear why the title is just keyword stuffing, the lame music and the spiderman outfit.
80 million views in a month is a lot of money: https://www.youtube.com/watch?v=ipTJNNvW-Gw
Just checked their channel: 4,316,098,805 views