Hard to tell.
Including Protheans and Forerunners
and Mass Relays and Rings (LOL)
Edit: Precursors too...
Edit 2: ALL OF THE STUFFS IN THE UNIVERSES EVEN TREES
[Edited on 03.25.2012 2:43 PM PDT]
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[quote][b]Posted by:[/b] risay_117 [quote][b]Posted by:[/b] AaronG67 Okay... Halo has the forerunners... Mass effect has over 500 Cycles, in which each consist of 9-10 species.[/quote] Forerunners with thousands of subserviant species. And pre human empire that nearly beat the forerunners[/quote] All you need to do is say "Precursors" and everything else is automatically invalidated.