Needs both a map/radar and a little extra code to ensure that you don't get sucked into inescapable, hyper-massive planetary amalgamations. When planets spawn right next to each other, gravity is compounded, making 3 larger planets into a death-trap.
 "Higher!"){kind=icon}
 "Chaos Faction"){kind=icon}
 "Amorphous+"){kind=icon}
 "Cosmic Crush"){kind=icon}
 "Portal: The Flash Version"){kind=icon}