In halo reach you could make kill balls fly around with man cannons and gravity lifts, but is that possible in halo 5? I’ve tried, but the kill ball just gets sucked into the man Cannon and it will stay there until I drag it out (with a bit of effort, cause it’s really stuck on it…)
I haven’t played with it yet, but try setting the kill ball to Normal physics and I assume it will drop after you go to player mode. If it’s Phased it probably won’t move.
Indiana jones remake?