I've tamed one on official. You have to do a certain number of unique missions, can't be the same one over and over. Once you've done that then you have to go to the middle of the map between rings to get mutagel. If you don't see mutagel in between the rings you have to wait until the next hyperspace jump. Hyperspace jumps change the landscape and material spawns in the no man's land area. Once you have mutagel and the correct number of missions go up to a Stryder and feed it the gel from the last slot in your inventory. Once you've done that, a body part will start sparking. It will be either the head, shoulders, leg joints, feet or chest. Go up to that body part and hit the Y button again. You will then have to play a mini game 3 times where you stop the scrolling blocks on the center line with RT. Then another body part will start sparking and after it has walked a certain distance away just prince and repeat. You only need the mutagel once.
To tame them, after completing the proper missions and getting mutagel, stand on their back and feed the mutagel to them. A peice of its body will spark and you will have to do a mini game where you use the attack button when the boxes are in the middle of the line. Messing up puts taming back to 0, but they will not need more mutagel.
A guide to the Eden zone and Stryder (next guide in shadow mane)
The Eden zone is a friendly area with a Maewings and Stryder. First, let’s start with the Stryder. The Stryder is tamed by hacking it, and can be accessed by using your jet pack to fly on to its back. You have to complete a specific amount of missions for a Stryder, depending on the level. You also need mutagel, which I would explain how to get, but I don’t know how to. The Stryder is also neutral, with lots of health, so be careful if you wish to kill it on foot, otherwise it isn’t too hard with a mount. Now to the Eden zone
Part 2: The Eden Zone
The Eden zone is pretty friendly, unless your in the upper bit. I’ve found lots of alpha creatures, an alpha rex, an alpha carno, and three alpha raptors! Surprising, yeah? Most of the dangerous things are in the upper half of the map, near the mountains. In the lower half of the map, you can find maewings and small predators like dilos or compies, along with medium to small herbivores. Next, there’s the upper half, which has medium to big predators and herbivores. Rexes, yuties, Carnos, and other things spawn near mountains. If your looking for an argentavis, I’ve seen some to the far right of the upper half near the wall. There should be a small mountain, and if you go there you can find argentavis. If you fly upwards, you can find snow owls, pteranodons, and uncommonly, tappies. That’s a basic guide to the Eden zone, the next guide will be in shadow mane, as stated above.