Knock the Rex X unconscious using your preferred torpor weapon, then feed it to begin the taming process. Torpor bleeds at 0.73/s, requiring regular sedative application to prevent a premature wakeup.

The table shows how many sedatives you'll need to keep the Rex X unconscious through the full taming duration. Your options are Narcotics (40 Torpor), Bio Toxin (80 Torpor, best efficiency), or Narcoberries (7.5 Torpor, cheapest but slowest). The Rex X bleeds 0.73 Torpor/s, so keep a close eye on the bar and sedate early.

ARK: Survival Ascended features the Rex X as a tamable, carnivore creature that survivors will encounter in the wild. It belongs to the Variant category.

The Rex X has 1,067 base Health - quite durable. Its base Melee Damage sits at 105%, giving it decent hitting power. Stamina sits at 420 base, providing solid stamina reserves. Weight capacity starts at 500, giving it an enormous weight pool.

To tame the Rex X, you need to knock it unconscious using torpor weapons, then feed it while it's down. For best results, use Exceptional Kibble - it gives the highest taming efficiency.

As a tame, the Rex X is valued for its harvesting efficiency, collecting key resources faster than most tools. Breeding produces fertilized eggs that hatch within a 32°C–34°C temperature window. A wild Rex X is worth 30 base experience when killed. It can be cloned at a Cloning Chamber for 0.87 Element plus 0.01 Element per level.

Use the calculator results to plan your tame - they show the exact time, food quantity, and bonus levels for the Rex X based on your settings.

The table below shows how many hits from each torpor weapon are needed to knock out the Rex X at different levels. Wait between shots for torpor to tick up. Firing too fast can kill the creature before it goes down.

To simplify the knockout, immobilize the Rex X first with Chain Bola or Bear Trap. A Tusoteuthis can also pick it up and drop it into a taming pen for a controlled knockout.