When you install Unity, you will sign in with an account that can be used to get FREE assets and tools off of the Unity asset store.
- SabreCSG is a CSG geometry editor which allows you to lay out the general shape of your map RIGHT IN UNITY. You can make stuff like this in like 10 minutes with it! DOWNLOAD IT
The Asset Store version is outdated!
- Umodeler seems to be a very powerful modeler inside of Unity. Not free, but people who have got it so far are loving it.
Tons of different 3d props that you can use for your level including tables, chairs, trees, plants, rocks, industrial crap, lights, etc. If you do not want to model all your own stuff or just need some place holders, download these! THEY ARE FREEProp Pack 1 Prop Pack 2 Prop Pack 3
Need more? Turbo Squid
Custom Intruder and Guard Skins
You can now make custom skins for the intruders and guards in any custom map. Attach the CustomMapSkins script to any object and load in your new materials.Download