Unofficial field guide · Dalton's Dinos, New Mexico

Terrible LizardsWiki

Every keypad code, a four-level walkthrough, and the movement tricks that keep a Brontosaurus off your heels. Written by people who played it, not by a content farm.

Find your code Start the walkthrough

Checked October 31, 2026Game v1.0.9Spoiler-light by default

Est. 1992

Terrible Lizards key art: a hand-drawn dinosaur skeleton under a teal night sky

Price $24.99

Released: Oct 29, 2026PC · PS5 · Xbox
Price: $24.99Launch −20%
First run: 6–10 hrsLead dev figure
Structure: 4 levelsOne ending
Extras: 15 achievementsPlus NG+

Pick a door

Start where you are stuck

Three entrances to the same building. None of them require you to read the whole wiki first.

I am stuckCodesEvery keypad in the game, in the order you meet them, with the clue that proves each number.Open the vault I want the routeWalkthroughFour levels, one page each. Objectives in order, chases flagged, and the parts people get lost in.Start level 1 I want 100%AchievementsAll fifteen, with a checklist that remembers what you have already done on this device.Track progress

The game in 60 seconds

A haunted museum where the floor is lava

Terrible Lizards is a first-person parkour game wearing a horror costume. You are Jordan, a college student whose car dies outside Dalton's Dinos, a once-thriving Route 66 attraction that is now empty except for a ringing phone and something moving in the service corridors.

There are no weapons. Survival is momentum: run, jump, climb, wall-run, bounce, slide. Each room teaches a move, then a dinosaur arrives to test it at speed. The whole game is that loop, four times, with the lights getting worse.

It is the debut game from WDR Studios, the studio arm of JT Music, and it launched on October 29, 2026 for PC, PS5 and Xbox Series X|S — day one on Game Pass.

How to actually move Is it any good?

The gift shop at Dalton's Dinos, with a dinosaur shadow cast across the back wall — Dalton's Dinos gift shop · screenshot © WDR Studios

Know what is chasing you

Three things, one rule

Full bestiary

Threat 3/5

The Titan

Brontosaurus

A sauropod rebuilt wrong: too long for the corridors it lives in, too heavy to outrun, and far too patient. It is the first monster you meet and the one that teaches you what the game wants from you.

Levels 1–2

Threat 4/5

The Hunter

Allosaurus

The creature lead's favourite, and the only monster that actively plays with sightlines. It patrols a space you have to work in, which turns every objective into a risk calculation.

Level 3

Dilophosaurus Hybrid in Terrible Lizards

Threat 5/5

Dennis

Dilophosaurus Hybrid

Part Dilophosaurus, part something with human hands, and the only creature that uses props. It wears a mascot costume to move around the attraction without being noticed, which is either clever or deeply upsetting.

Late game

The route

Four levels, start to lift

All four

The Dilophosaurus mascot lunging out of a service corridor in Terrible Lizards — He is very friendly. He would like a word.

The one everyone searches for

Who is Dennis?

Dennis is the Dilophosaurus Paleo Pal — a mascot with a lanyard, a hat, and a voice provided by CG5. He is also the name a child in this game gives to the thing that has been living under the attraction. Those are not two separate facts.

We also clear up the thing half the internet gets wrong: Dennis is not the Allosaurus.

Read the Dennis file Full cast

The two everyone needs

The famous two codes

Both are in the first level, and both come from something in the room rather than from a menu. Here is what they unlock and why the game expects you to find them.

All seven codes

Level 1 · Main reception

9216

Employees-only keypad

Join the two torn halves of a staff note: one is tucked into the Allosaurus fossil's hand, the other sits at the base of the Brontosaurus mount on the right side of the hall.

Level 1 · Gift shop

1903

Gift shop basement door

Jordan reads it out after the VHS tape and the call with Stella. It also appears on the objective line.

Before you buy

Quick answers

All 20 questions

What is Terrible Lizards?

A first-person horror parkour game from WDR Studios, set in 1992 at Dalton's Dinos, a dinosaur roadside attraction on Route 66 in New Mexico. You have no weapons, only movement. Beginner guide

When did Terrible Lizards come out?

October 29, 2026, on PC, PlayStation 5 and Xbox Series X|S at the same time. The demo arrived a month earlier, on September 24. Platforms

How much does Terrible Lizards cost?

It lists at $24.99, with a 20% launch discount that brings it to roughly $20 on most stores. It is also a day-one Xbox Game Pass title. Price guide

How long is Terrible Lizards?

About 6 to 10 hours for a first playthrough, according to the lead developer. People who read every note and chase every amber report closer to 12. Length breakdown

Is there co-op or multiplayer?

No. It is a single-player game on every platform, with no announced co-op, invasion or multiplayer mode. All questions

How many levels are there?

Four, and the Steam achievements are literally named Finish Level 1 through Finish Level 4. There is one ending and no episodic content. Walkthrough

How this is written

Every number on this site traces back to the Steam store page, an official WDR Studios post, or a launch-week community guide that we have flagged as community work. Where guides disagree — the reception keypad, for one — we say so instead of picking a winner and pretending it is fact.

Checked October 31, 2026
Applies to v1.0.9
15 achievements · 7 keypad codes
Still updating post-launch