there is already a tiberium mod on here does this one differ?

I don’t know much about Factorio and Conquer, and at this early stage my mod might look similar. But it’s still in very early development, and I plan to add much more — not just Tiberium, but also unique features to make it stand out.

Not saying what you should or shouldn't do, but you're creating an exclusivity branch if you take that path. If you don't know what the difference is between F&C and your own mod yet, you should really figure that out before you get started. Also, collaboration could be a strength, maybe the changes you want to make could overwrite less desired behaviors of the existing mod. Good luck either way, if you make something compelling enough I might even switch over.

Collab in the name of KANE!
Peace through power!

Quotes aside, im excited for the mod. xD