On single player, if you can't find a good cliff to shoot the a Rex with Tranqs, use a good mount with lots of health that you can shoot off of that can easily avoid it. Usually how I knock out Rex's by myself.

So you can go onto a rock the red can't get onto then you place some gate frames around it then you want to add gates and start tranquil it with a recommended crossbow

First go on a cliff and since you would be on the top of the cliff you can shoot it without getting hurt. Then once it is knocked out get some pulmonoscorpius kibble and raw mutton you will need at least 20 bio toxin and then just wait for it to tame. ?

To tame the T-Rex it is best to get a longneck rifle and shoot and shoot with tranquilizer darts until it gets knocked out.Then what you should get it's favourit food Wich would be:Pulmonoscorpius Kibble or Raw Mutton.Then just wait ?

I use my Rex for taming smaller creatures that don't attack tamed Rexes. I stand safe on top and tranq them down.

DONT GO NEAR ALLOSAURUS THO THEY WILL GANGBANG YOUR REX

Surprisingly easy to KO. Get on a high enough cliff, tranq it down. It doesn't run around in circles. Have fun.

Rex dont want to be fed. They want to hunt. Good luck survivors

Tip once you knock one out, be careful, as I often find more than 1 in a single area

Get it stuck in a rock formation or a cliff or anything else

Once there was a 150 Rex I shot it with tranquilizer arrows and it died

I use a taming raft i tamed a150 rex easily and a giga

Ride on a Dino that you can shoot Trank arrows or darts off of and let it follow you when it starts running then charge it

When you have a Rex agro'd on you lead it to a cliff so I can't hit you but you can hit it

Highly recommend 6 dino gateways. 1 dino gate and 15 stone pillars. Place the gates in a rectangle. One on the left and right, 2 on the top and 2 on the bottom. Like a rectangle. A dino gate on one of the smaller sides of the rectangle and place the stone pillars in the middle of the gateway that does not have a dino gate. And from there. Im pretty sure you can figure out the rest ;3

Trapping it in a pen is ideal for anyone who wants to tame it without any problems so put beds nearby for you or your friends just in case they get killed trying to lure it in, have someone pick up you and your friends so you can tranq it and boom you got yourself a Rex.

Becareful that you don't smoke bud otherwise he might get munchies and die

So ive found a lot of rex's either by south zone or where snow meets sand it west. A great way to tame it is get a friend with a bird, have him/her fly you over (bring spyglass to scout levels) then go to town with narco arrows, etc

Easiest way to do this is to get a bird and have it follow you to a steep hill it can't climb and shoot it with tranqs, use a low lvl bow or cross bow, you're going for torpor not damage

Lots spawn in snow biom. If you can't find a high level go on a killing spree to get a new round of spawns, scout the area again, repeat until level you want spawns.

Certainly need more narcs than stated here. Bring at least 28narcs to be safe for lvl 155+