Nothing, it just plays the video in the background with the start blinking on the screen. You can't tap past it. You can tell the tapping works because when you tap the menu button it transitions in the tapped state for a second but nothing pops up. Basically...the start page appears to work but you can't tap past it.
Mod apk works fine with bluestacks 5, but with a few freezing attempts trying to start it up.
Also the game hates Direct X so disable that to make it abit more stable