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TEK REX
The Tek Rex is a carnivore found on Genesis: Part 1, with a drag weight of 550. Tamed, it harvests Raw Meat and Raw Prime Meat better than most creatures. It is rideable.
Stat Calculator
point distribution & extractionRoll Quality
how lucky these wild points areKnock Out
Tek Rex at a glance
the game's own base values — the calculator above levels them| Stat | Base (level 1, wild) | Per wild level | Per tamed level |
|---|---|---|---|
| Health | 1,100 | 220 | 5.4% |
| Stamina | 420 | 42 | 10.0% |
| Oxygen | 150 | 15 | 10.0% |
| Food | 3,000 | 300 | 10.0% |
| Weight | 500 | 10 | 4.0% |
| Melee Damage | 100% | 5% | 1.7% |
| Movement Speed | 100% | — | 1.0% |
| Torpidity | 1,550 | 93 | — |
A wild Tek Rex starts at 1,100 health and 100% melee damage. Its drag weight is 550, which decides what can carry it. Killing one gives 30 base XP.
Taming food: Exceptional Kibble, Raw Mutton, Raw Prime Meat, Cooked Lamb Chop, Cooked Prime Meat, Raw Prime Fish Meat, Raw Meat, Cooked Prime Fish Meat. Torpor drains at 0.725 per second once it is unconscious.
Breeding: lays an egg, incubating in 4h 59m, and the baby matures in 3d 20h 35m with 11 imprints available. The egg needs 32–34°C to incubate . Mating cooldown runs 18h to 2d.
Immobilised by: Chain Bola, Large Bear Trap.
Best at gathering: Raw Meat, Raw Prime Meat, Chitin, Keratin, Hide.
Drops on death: Raw Meat, Raw Prime Meat, Hide, Tyrannosaurus Arm.
Taming Calculator
Lv 150 · knockoutHow You Get One
method, in orderHolding it still
Chain BolaFired from a Ballista or 
Harpoon Launcher. Grounds flyers and pins them where they land.
Large Bear TrapSame idea as the 
Bear Trap, sized for the big stuff. Bait it into walking over one.That's the full list — nothing else immobilizes a Tek Rex, per the game's own immobilizer table (drag weight 550).
Taming at a glance
a level 150, at official 1× rates| Level | Exceptional Kibble | Time | Effectiveness | Bonus levels |
|---|---|---|---|---|
| 30 | 5 | 17m 03s | 99.6% | +14 |
| 60 | 8 | 27m 17s | 99.4% | +29 |
| 90 | 11 | 37m 31s | 99.1% | +44 |
| 120 | 14 | 47m 44s | 98.9% | +59 |
| 150 | 17 | 57m 58s | 98.7% | +74 |
Every number in this card is at official 1× rates, with the fastest food. Taming speed and food consumption multipliers change all of it, and most servers are not on official — the calculator at the top of this tab takes your rates, a Sanguine Elixir, and every other food this creature will eat.
Effectiveness is what decides the bonus levels: every unit of food eaten costs a slice of it, so the food that needs the fewest units finishes at the highest level. That is why kibble is worth the trouble — not that it is much faster, but that it is fewer feedings.
Torpor drains at 0.725 per second while it is unconscious, so on a long tame you will need Narcotic to keep it down. The calculator works out how much.
Timers
start them when you knock it outServer Rates
every number on this tab is calculated at these ratesBreeding
egg → adultDrops & Harvest
On death
Abilities
what it does and how you trigger it 
- Bite Primary attack
The
Rex bites the target for 62 damage.5 stamina · 0.82 cooldown - Roar Secondary attack
The Rex unleashes a menacing roar to frighten enemies, causing them to defecate and get stunned for a short time. Flyers also get grounded. To be affected, the target's Drag Weight must be 200 or less, and their level must be lower than the Rex's. Targets must also not have been frightened in past 6 minutes to prevent "poop-locking". Survivor's / Rider's Fortitude is considered in addition to the pure level of a potential target. Each full point means 10 / 5 extra levels.
5 stamina
Details
everything else the game files recordKnockout by level
every level, as a tableA level 150 Tek Rex has 15,407 torpor and takes 71 Tranquilizer Darts or 172 Tranq Arrows to knock out — 47 darts with head shots.
Full Tek Rex knockout table → — every level from 1 to 450, across seven weapons.
Where it turns up
pages that mention this one1- Tek Cavelives in this cave · The Island
