Heres a tip- if u go into the bosses arena and forcetame it.... you'll be stuck there forever bc the boss gotta die in order for u to leave. :) hit de good button so more peeps can see

For this fight, you will need 19 rexes and one yutyrannus. Portal is situated at the Blue Obelisk Terminal

Artifact of the Brute: 530010

Basiliosaurus and scuba gear needed.

Follow the path to the left every turn, till you end up in a big water chamber with the artifact in the middle

Artifact of the Pack: 685560

Crossbow, grappling hooks, bug repellent, weapons (best place to find megalanias)

Stick to the left every time in the cave, until you approach a small drop with xp book at it. Always stick to the right after that.

Artifact of the Devourer: 140863

Tamed Barryonx, possibly scuba gear, weapons

Follow the path, until you have to go underwater. Swim to the left in the water, then to the right. You will then be led to a massive ravine cavern, with glowing blue crystals on the walls. The artifact is right below you on the very bottom floor. You literally cannot miss it because it is glowing a bright purple.

5 Tribute Items:

Spino sail

Therizino claws

Megalania toxin

Megalodon tooth

Thylacoleo hook claws

Once at the arena, BE CAREFULL AS HELL THAT YOU AND YOUR TAMES DO NOT, NOT, NOT FALL INTO THE HOLE AT THE RIGHT. YOU AND YOUR TAMES WILL DIE IF THEY FALL IN, OR YOU DO.  Quicky get all your dinos in the fighting arena, as the boss has knock back damage. Fight at beta difficulty.

Make sure that you move your Rexs or creatures into the trees when you get teleported into the arena. This is to prevent your tames from falling into the hole in the arena, because if they fall they just die, and you lose the saddles and everything. Then you can go up on your yuty or whatever you are riding and you lead the Megapithicus to your tames, then let them go ham on the monkey. The Megapithicus is a glass cannon and anything g with a good saddle and a high health stat can easily destroy it. Just make sure that nothing falls into the death hole and you’ll be fine to actually fight the boss.

Hardest part about this boss on The Island is getting the Spino sails for the alpha summoning. Spinos don't like to spawn on this map (FYI they are water spawns so kill fish to try to get them to spawn in) and I had to go to Crystal isles and transfer a few stacks over. He's a pushover and a glass cannon. Just avoid the pit falls in the arena and bring him to your tames in the trees and swarm him with theris or rexes while you ride a screaming yuti and he goes down really fast.

For gamma:

12 rex 20k hp 300 melee

Beta :

14 rex 25hp 500 melee 1 yuty

Alpha :

18 rex 25 hp 500 melee 1 yuty 1 health pig

U dont need good saddles trust me the different between primitive and ascendant saddles only 10% damage resistance

The megapithecus has two attacks a direct hit attack and a ranged Boulder attack. The boulder attack can and will kill you off your tame and I figured this out the hard way.so safest thing is to wistle attack Target hope off and have someone roar the Yuri good luck survivors.

This thing spawned on my map for literally no reason and now I have to run away from a giant death monkey, and no I did not summon it. I have no idea what to do

To battle the megapithecus, I would suggest using a pack of allos,a yutyrannus, and a daeodon. The reason I pick these creatures are because that first of all, allos in a pack are dangerous, and one of them will be boosted as the alpha, and the other allos will also be stronger. Second, yutyrannus’s can scare away the minions the boss summons, and can make the creatures deal more damage. I also HIGHLY request a daeodon because they can heal your Dino’s, and itself durning battle, just make sure it has enough meat to last the battle. This method will work with any boss on the island DLC, not the overseer, but I used this method on the broodmother,megapithecus, and dragon, and it worked perfectly.

Been said to be one of the easiest but yuti and rexs is all you will need. This boss on hard takes us about 4 mins. Surround and start chomping. Debuff with yuti plus buff your rexs.

This boss really isn’t that hard. All you need for yourself is mastercraft or ascendant assault rifle (journeyman will do, but Isn’t as good). Then, to deal with his minions,get 4-5 high level troodons, because they will absolutely WRECK the minions. As tanks, Rexes are, of course, nessecary. And to keep yourself out of trouble, get a fast but durable mount, like an allo or a really high level raptor. Hope this helps!