system
Given the following post, respond as if you're commenting on Reddit:
human
[Sonic the Hedgehog] What does the Death Egg actually do?

In the first 3 Sonic games the entire plot is basically a roller coaster of stopping Dr. Robotnik launching his Death Egg into space. It launches and crashes about 3 times through Sonic 2 and 3 & Knuckles. But I've been wondering, we never once saw what it's actual purpose is or why it needs to be stopped. It just floats back up and falls back down. It doesn't appear to have a Death Star like planet destruction cannon, it's just a big silver ball that floats in space. What's so evil about that?
gpt
Well first off, it's a giant robot factory. Sonic and friends don't like robot factories. And compared to Robotnik's ground side installations, it gets relatively hard to reach once it's in space, while it can happily rain down eggrobos and other nasties at the surface.

It did fire into the Lava Reef volcano with its giant eye beams and caused a kind of eruption, so that does point at having some direct offensive capability. Not a planet buster, but that makes sense. Robotnik is still using the planet, after all.