The Alien Invader genes Mod is heavily inspired by the xcom series but not an exact representation of it.
Alien Invader genes Mod features

3 Headtypes
Chimera
Ancient
Stalker
2 Voicetypes
Simple Alien (Xcom 1 sectoid)
Advanced alien (Xcom 2 advent)
2 misc genes
Offworld origin (base gene needed for hybrids and it also provides additional overall genetic and metabolic quality)
Alien fingers (improves manipulation)
Additional credits: Elseud provided the texture of the Ancient headtype and provided me with the preview picture.
