So this is from experience and for clarification I'm doing this on mobile. The best way that I learnd to tame one is to kill it. Yeah yeah I know that's not easy but one way I found out how to is to knock it out in water and let it down. Then get the essences and revive it at the green obelisk. Use a quetz with a platform saddle to tame it because it moves fast. The other way and this is only in the mobile edition is to get the op level buff with potent dust and use it on a spino. Biff up the hp to over 10 thousand and buff the attack speed and stamina as well if you need to get away.

More Giganotosaurus Taming & KO Tips