Along with co-op, the big, new gameplay element in Dead Space 3 is weapon crafting. In Rob Manuel's Dead Space 3 preview, he builds guns. Lots of guns. Big guns, small ones, medium sized one. Guns, Guns, Guns!
Here's a taste of the Dead Space 3 preview.
"From the remaining bits and pieces of humanity you'll stumble across in your journeying, you can cobble together weapons, upgrades, and even items for you to use out in the field. Guns start with either a light or heavy base that you build on from there. The base determines if you're going in with something light and quick or something with a little more firepower to light up the night. One of the developers kindly made a list of all the fun guns that you can make just by putting certain pieces together. But I choose to try my hand at making my own monster-killer."
Read the rest Dead Space 3 preview.