I'm currently undertaking a personal project at home that I need to turn around inside the next few months (which working full time and still learning programming makes it a tad difficult). I'm looking for suggestions on SDK's or tools (preferably free or that come with games, similar to steam tools) that I can use to develop a "game". I'm OK with coding but have no 3D development skills at all.

I've very little experience with mod tools or SDK's at all but I'm hoping someone can point me in the direction of one that does the following:

• A decent library of prefab 3D models to build scenes.
• Ability to add scripting to the scene

I've used Unity before and would prefer to continue to do so however I really have the worst 3D skills imaginable and can't waste time learning them.

I'd be looking for pre-fab items that are both industrial and possibly more lush environments (trees etc). If it makes any difference (due to licencing and what-not) I WILL NOT be selling this game or marketing it in any way and I am a University Student if any places do educations licences.

Another alternative would be to source free 3d models elsewhere but again while I'm still learning I have no idea where to look if someone could point me in the right direction I'll do the rest of the digging.

Thanks