If you play abberation tame on. Due to it always being half day, half night it gains it's night buff all the time. This making it sooo much better than it usually is.

Useful tip for everyone: Ark’s day and night cycle is 1 hour in real life (on normal settings).
That means if you shoot the dinosaur right out at 8:30 p.m., it will wake up in real time in one hour at 8:30 p.m. the next day. For each past hour you have to subtract 2 minutes and 30 seconds. Example: you knocked him out at 10:30 p.m. -> he will wake up in 60 minutes - 2,5 - 2,5 = 55 minutes
At level 26, it is the first time that the Megalosaurus needs more than an hour to be tamed.. So be prepared to knock him out twice or three times

I just waited until the megalosaurus said get to sleep then I shoot them since they are very slow at daytime then I feed them raw prime meat from the titanoboas

The best way to tame is make a gate, aggro it on the gate, and when it’s out of stam it’ll knock on its own. Then it won’t wake when it hits night. Trust me, I did it. ^ if this helped.

On mobile it only takes 3-6 tranq darts to knock it out