is the Devastating Asteroid Impact app.
It’s important to plan ahead on these things. You want to maximized death and devastation, yet not do so in such a way that you wind up having no terrorized populace to rule with an iron fist after you bring order to global confusion. Also, a planet that is tilted too far on its axis or knocked into and eccentric orbit can be troubling and might necessitate more asteroid impacts to set it right. All of this can be very inconvenient.
People don’t realize what a delicate art it is to be World-Bestriding Colossus of Fear. Nobody understands me.