The mammoth already has a platform saddle in ark mobile but you have to buy the engram with real money. Click the up arrow if you want to help convince wildcard to add it into all versions of ark fully including ark mobile for free!!! Help start the petition revolution!!!!
These guys are one of my favorite creatures! They collect metric tons of wood and are pretty tuff, but with that their stamina is very low so make sure to keep stim- berries on your mammoth at all times or you might find yourself between 5 carnos and a hard place. These bad boys are a must have in solo, PvP, and PvE for that matter. Hope this helps.