XCOM: Enemy Another (like "Enemy Unknown" or "Enemy Within") - a fanfiction story, crossover between "XCOM: Enemy Within" and "My Little Pony: Friendship - Is Magic" unvierses. Aliens invade on Earth and XCOM project activated to defend mankind. But they meet an "Another" enemy - Ponies from Equestria homeland. They fight against their will. XCOM receive a new mission - save pony race from aliens or destroy them like others, but EXALT and MLP (Mankind Loves Pony) organisations will distrub XCOM activity with "another enemy".
Psionic Unknown - continues of "XCOM: Enemy Another" ending. In Apex, pony's town in Earth, visited by hundred people, Goverments in nervous status. After long war with aliens, most people discover The Gift - psionic. Psi Heart, main protagonist and a new pony in Apex, will reveal some secrets about mysterious XCOM project, The Gift and way to Equestria to take back their homeplanet from alien control.
XCOM 2: Enemy Another - if XCOM lose in first part, so they did in in "Enemy Another". Now XCOM fight against ADVENT forces and ponies to take back Earth. No mercy, but a new reveals about Avatar Project and why ponies is there will be very... shocked for humanity.