The best way to level up a Giga on Rag is to get a bunch of wyverns to follow you on your griffin/ptera, then dismount you’re flyer above the Giga, then get on your Giga and absolutely destroy them. This got my Giga 26 levels from 3 wyverns.

I was so dedicated to get a wyvern my first time ever doing it I lost a 109 pteranodon 27 pteranodon a 28 argy and a 62 argy but I got a super good wyvern doing all of that was so worth it

Will they be added to ark mobile?

Make sure to carry bolas on you..... so you can bola your friends and run