Don't Steal My Eggs First Zone Guide: Access, Activities and How to Advance

The first zone in Don't Steal My Eggs is the green starting biome every account spawns into — there is no unlock, travel step or prerequisite. The game's own wording fixes the name: its "Discover T-Trex" badge is described as "Earned By Defeating The First Zone Champion.", and Roblox stats pages for the game list that badge at 75.4% rarity, rated Easy — a gate most players clear. The zone's progression job is one loop: train speed on treadmills, catch the chain of egg thieves (chicken, frog, bat, tiger, giraffe, whale, then the boss), and defeat the T-Rex, the First Zone Champion. That win completes the biome, awards a T-Rex egg, and opens travel to Desert Island (World 2).

What the first zone is, and how you get in

Access is automatic. Fresh accounts load straight into the zone as a chicken, usually mid-intro: a robber creeps up on your eggs while your character sleeps, and the scenario begins before you've touched a menu. The tutorial then plays out inside this same zone:

1. A noob named Nubini steals your egg — chase him down and catch him.
2. Place the one basic egg you saved and hatch it (you get a common chicken pet).
3. The game points you to your first purchase: "Unlock for 10 a treadmill."

On the name: officially, it is just "the first zone" — the badge phrasing is the only official label the game shows. Playthrough videos narrate the green biome as "Green World" and "world one," and the next area as "Desert Island" or "World 2," but those are player-facing shorthand, not confirmed on-screen names.

What's inside the zone

• Treadmills. The core training tool. The first one unlocks for 10 cash and upgrades to a silver treadmill (500 cash in one player's run); the shop ladder continues through golden, diamond, devil, desert, aqua, lava, galaxy, jurassic, frozen, sakura, hacked, balro, maha and i2 tiers. Their stated purpose is exactly what the tutorial says: chill on the treadmill "to become fast enough to chase after the other faster people that steal our eggs." Upgrades come in cash steps too — one group bought a 10K treatment upgrade and then a golden-level one.
• Trail shop. Trails add speed multipliers; one player found a "Rainbow special trail times three speed" and noticed trails in their shop started around 100K cash.
• Egg spots. Places to set down the eggs you win from thieves, where they hatch into pets.
• Index (inventory). Shows which animal hatches from which egg, lets you switch which bosses and pets are active, and lists a recommended value for each next animal in the chain.
• Playtime rewards and the world menu. Timed rewards hand out cash and animals, and each world — including this one — has its own gem-purchased upgrade; world one's is a cash boost.

The core loop: catch thieves, become the animals

Thieves spawn constantly and run for your placed eggs. Catch one before it escapes and you win its egg and transform into that animal — the index spells out the rule: you can turn into the animals you beat. Fail and the reward is gone; one player realized "the only egg we actually got was the egg that we stopped getting stolen."

The typical first-zone chain, as run in every playthrough:

The ordering is typical, not exact: one player grabbed the bat egg having "skipped over the frog egg, I guess," and the animal right before the boss is named differently from video to video. The reliable pattern is simply: keep catching whatever thief the game sends at you next, and each catch moves you one form up the chain. For keeping your placed eggs safe while you chase, see the egg protection guide.

Speed is what makes the catches possible. Every next thief is faster, the index shows a recommended value for each next animal (one player saw "805 recommended" next to the frog entry and took it as speed), and in one run a player was flatly told "you can't pass to T-Rex" until their speed was high enough. No fixed speed numbers are confirmed — treat the index value as a checkpoint, and if a catch keeps escaping, train more. Our speed training guide covers the treadmill grind in depth.

Worth doing before you leave

• Hatch every egg you win. Eggs hatch fast — the T-Rex egg took about 30 seconds in one run — and hatched pets earn passive cash forever. Small pets add up (a turtle placed for 65 gave back 78), and the T-Rex a player hatched after the boss earned 16,500 cash per second in that session. The hatching guide covers the system in full.
• Rebirth when you can afford it. Rebirth consumes cash and multiplies earnings — one rebirth gave "times four cash," which immediately funded another treadmill upgrade and a big speed jump. It's an accelerator for the speed grind, not a gate. More detail in the rebirth guide.
• Claim playtime rewards. They pay out cash and animals on timers; one late-game player banked a pile including an owl, a giraffe and a snail worth 500 billion cash in a boosted session — session values like that aren't baselines, but the rewards themselves are free progress.
• Grab the free shop items. There's a gift pot at the very bottom of the shop and a training potion above it, both free (paid 50-Robux versions sit alongside). New accounts also get 1,000 cash, an equippable train potion and a free animal, and codes occasionally add extras — the codes page lists what's currently live.
• Feed the index. Completing each boss grants a train multi, and collecting a full pet set for an egg grants a cash multi — both permanent. The pets page tracks the sets.
• Save gems for the world-one cash boost. Each world sells its own gem upgrade; this zone's is a cash boost, and you can buy it now or come back for it later.

How to advance: beat the champion, then travel

1. Train until catches are easy. Buy treadmill upgrades as cash allows, equip a speed trail if you've saved for one, and check the index's recommended value before each next target.
2. Catch up the chain. Frog, bat, tiger, giraffe, then the sea thief — each catch is confirmed by a transformation and a new egg to place.
3. Beat the boss thief. The final thief is the T-Rex, the First Zone Champion. Winning plays out the same way in every run: "Okay, I have completed the biome. I turned into a T-Rex." You also receive the T-Rex egg.
4. Hatch the T-Rex egg before you go. At least one player was already being sent toward World 2 and chose to open the egg first — a sensible order, since the hatched T-Rex starts paying passive cash immediately.
5. Travel to Desert Island. The unlock happens when the biome completes: players describe a prompt ("Can we go to a new world? Ooh, desert island"), an automatic send ("it's sending me to World 2 right now"), or simply running through the passage once their speed is high enough. No transcript names the exact object you interact with, and whether the game hard-blocks travel before completion isn't observable — every recorded run advanced only after beating the boss. Practically: finish the champion, keep your speed trained, and you'll reach the desert.

Desert Island is the second zone (World 2), and it expects far higher speed — one player's next treadmill upgrade there already cost 15 billion.

The zone stays reachable later

Leaving doesn't lock you out. Late-game players travel back to world one deliberately — one returned with a stack of gems specifically to buy this zone's cash boost before world two's speed boost. The first zone therefore doubles as a permanent upgrade shop you'll revisit from later worlds. When you're ready to look beyond it, the full world order is laid out in the zone progression guide.