Roar
Briefly stun susceptible lower-level enemies and force them to defecate.
Controls
- RMB
Lost Rex
CreatureVariant
- Saddle
- Level 74
- Kill XP
- 30
- Taming
- Not tamable
Overview
The Lost Rex is a large carnivorous variant creature. It possesses the ability to be carried by certain larger creatures, making it useful for strategic deployment. Its primary utility comes from its capacity to be airlifted by Tusoteuthis, enabling rapid transport across difficult terrain or into combat zones where direct travel is dangerous.
This creature is typically used in coordinated assaults or for targeted raids, leveraging its carnivore strength and mobility when paired with a flying carrier.
Base statsLevel 1 values and gain per level
| Stat | Base | Wild +/lvl | Tamed +/lvl | Wild growth |
|---|---|---|---|---|
| Health | 1100 | +220 | +4% | |
| Stamina | 420 | +42 | +2% | |
| Torpidity | 1550 | +93 | +0% | |
| Oxygen | 150 | +15 | +2% | |
| Food | 3000 | +300 | +2% | |
| Weight | 500 | +10 | +0.8% | |
| Melee damage | 100% | +5% | +10% | |
| Movement speed | 100% | +0% | +1% |
Base statsOpen calculator
Lost Rex cannot be tamed.
Abilities
Default PC controls. Custom keybindings may differ.
Weight reduction
About weight reduction
Drops & harvest resources
Compare recorded corpse resource yields by harvesting tool.
SettingsHarvest body HP 520 · Player melee % 100 · Weapon damage % 100 · Harvest rate × 1
| Resource |  Pick |  Hatchet |
|---|---|---|
 Hide | ~2140% · ~17 hits | ~3260% · ~13 hits |
 Raw Meat | ~2460% · ~17 hits | ~1640% · ~13 hits |
 Raw Prime Meat | ~13% · ~17 hits | ~12% · ~13 hits |
Each harvest event rolls resources independently. Actual yields vary.
Killing the Lost Rex yields Tyrannosaurus Arm, Rex Bone Helmet, Hide, Raw Meat, and Raw Prime Meat. The Hatchet yields the most Hide, while the Pick is best for Raw Meat. Dinos specialized for Prime harvest are most efficient for Raw Prime Meat.
Gathering abilities
Attacks and abilities
BreaksThatchWoodStoneMetalTek
- BiteLMB
Base damage62
- Thatch341
- Wood186
- Stone-
- Metal-
- Tek-
More abilities
- RoarRMB
- Tek Saddle CannonLeft Ctrl
Damage taken
ResistsWeak to
Weapons
- Mining DrillImmune
- Stone weapons-34%
- Player melee-20%
- Piercing projectiles+40%
- Anti-creature damage+120%
Explosives
- Demolition explosives+50%
Creatures
- Creature attacks-50%
- Herbivore attacks-40%
- Strong creature attacks+50%
- Raid creature attacks+55%
Environment & other
- Plant Species X-50%
- Environmental damage-30%
- Spike Wall+400%
HitboxesHead ×1.5
Base damage at level 1, 100% taming effectiveness, no imprint. Open damage calculator
Combat notes
The Lost Rex has a significant vulnerability to spike walls, taking +400% damage, making it highly susceptible to defensive perimeters using these structures. It also takes +120% damage from general instant damage sources and +55% from metal melee attacks. Conversely, it is completely immune to mining drill damage, reducing that damage source by -100%. It resists piercing melee attacks and piercing projectile impacts by -50%, including those from double-dino damage sources.
The head of the Lost Rex has a damage multiplier of 1.5x, making headshots more effective when attempting to knock it out or defeat it in combat.
Can break Thatch and Wood. Build at least in Stone.
Combat & abilitiesBase XP per kill: 30
Lost Rex kill XP
Base XP per kill: 30
Per kill
2,385 XP30 base × 15.9 level × 4 × 1.25× wild × 1× server
Saddle crafting XP
- Rex Saddle344 XP
Base 86 XP · Level 74
- Rex Tek Saddle344 XP
Base 86 XP · Tek
Base × 1× quality × 4 × 1× server
Server XP settings1× · wild 1.25 · alpha 1.33 · boss 5 · cave 1.33
Experience
- The Lost Rex can be stunned by triggering its Roar ability, which activates a 4-second stun on enemies within a 75-degree cone. This ability has a 60-second cooldown.
- It is highly vulnerable to spike walls, which exploit a +400% damage weakness, making them extremely effective in base defense.
- The creature is immune to mining drill damage, reducing it by -100%, allowing it to safely bypass automated mining systems.
- It can be immobilized and carried by Tusoteuthis, enabling unique aerial deployment strategies.
This page details the Lost Rex's stats, taming requirements, breeding mechanics, harvest specifications, and combat data. For further assistance, refer to the taming calculator, breeding calculator, and spawn map for additional insights.
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