Quick answer: Steal an Egg is scheduled to open its New Alien Biome on Saturday, November 7, 2026, at 16:00 UTC — 11:00 a.m. Eastern and 8:00 a.m. Pacific. The event listing currently runs through November 14 at 19:00 UTC. The developers have teased stronger UFO signals and a new alien-themed area, but they have not published the biome’s exact entry requirement, egg pool, pet names, rarities or reward values. The countdown is real; most of the reward details are still unknown.
Updated November 4, 2026 · By Shivam Das
How long until the Alien Biome opens?
As of Wednesday, November 4, the scheduled launch is three days away. Roblox’s event record lists the New Alien Biome for Saturday, November 7, at 16:00 UTC. That converts to 11:00 a.m. Eastern Standard Time and 8:00 a.m. Pacific Standard Time for U.S. players. The current listing ends on November 14 at 19:00 UTC — 2:00 p.m. EST and 11:00 a.m. PST.
- Launch: Saturday, November 7, 2026, 16:00 UTC
- U.S. Eastern: 11:00 a.m. EST
- U.S. Pacific: 8:00 a.m. PST
- Listed end: Saturday, November 14, 2026, 19:00 UTC
These are conversions of the published event window, not a guarantee that every server will refresh at the exact same second. The United States has already returned to standard time by November 7, so EST and PST are the correct U.S. labels. Before joining, compare the public Roblox NEW ALIEN BIOME event listing with the countdown displayed inside your current game server.
Why Update 12 is different from the UFO Invasion
One reason the countdown can be confusing is that the alien storyline has already started. Update 11, called UFO Invasion, arrived on November 2. It introduced Paranoid Pete’s machine-repair setup and the Signal Decoder, then added recurring UFO activity. That update is the lead-in; it is not the full Alien Biome.
The next release is identified as Update 12. The creator announcement and the Roblox event listing place the new biome on November 7. Keep the two releases separate when checking guides: a player who has completed Pete’s current tasks has not necessarily unlocked or entered the new biome early.
For the already-live UFO mechanics, see our Steal an Egg UFO Invasion guide. Our earlier Alien Biome schedule and confirmed-details report covers the event window; this article focuses on the countdown and the checks worth making when Update 12 opens.
What has actually been confirmed about the biggest new biome?
The public event teaser points to stronger extraterrestrial signals, more UFO sightings and a new Alien Biome. Update coverage describes the coming area as the game’s biggest new zone yet. That is a useful indication of scale, but it is not a detailed content list. The official event card does not name a new guardian, the number of eggs, individual pets, rarity tiers, income rates or a Speed threshold.
Players should therefore treat the following as launch-day questions, not confirmed features:
- Zone layout: How large the new area is, where its entrance appears and whether it branches from an existing route.
- Access requirement: Whether players need a particular Speed level, quest completion or another condition to make successful egg runs.
- Egg and pet pool: Which eggs appear, how many pet-index slots are added and what rarities the game actually displays.
- Guardian behavior: Whether the new zone introduces a different guardian, chase pattern or hazard.
- Rewards: Any index completion reward, quest item, special weapon or limited-time collectible shown in the live game.
Until those details appear in the experience or a developer post, a leaked pet name, exact income figure or claimed guaranteed reward should not be repeated as fact. The phrase “biggest biome” does not prove how many pets or eggs will arrive.
What players should do before the countdown reaches zero
- Check the event card again. Open the official Roblox event page on launch day. If its time changes, use the updated listing rather than an old screenshot.
- Finish the current UFO Invasion tasks you care about. Update 11 is separate from the new biome. Do not assume Pete’s Signal Decoder automatically grants access to Update 12.
- Keep some resources available. Until the new area shows its real costs and requirements, avoid spending all your currency based on an unverified Speed-gate prediction or rumoured egg price.
- Leave room to record new discoveries. Check the in-game Index after the update and note the exact pet names, rarity labels and any completion reward that the interface actually displays.
- Verify claims in your own server. A screenshot may come from an older patch, a private server or a different stage of the event. Compare it with the live UI before sharing it.
How to judge the new area once it is live
The most useful first check is not a rumour list; it is the actual entrance and the instructions attached to it. If the game shows a Speed recommendation, compare it with your current value before carrying an egg out of the area. If a guardian chases players, observe whether egg size affects the escape run before trying to steal a high-value egg.
Next, open the Index and record the visible egg and pet names. A silhouette or a “???” slot is not enough to identify a pet. Wait until the detail card shows its name and rarity. If the game displays income, note whether the number is a base value or already includes size, weight or mutation bonuses. Those distinctions matter when players compare pets or decide what to keep.
Frequently asked questions
When does Steal an Egg Update 12 start?
The current event listing schedules the Alien Biome for Saturday, November 7, 2026, at 16:00 UTC — 11:00 a.m. EST and 8:00 a.m. PST.
How long is the Alien Biome event listed to run?
The event window currently ends on November 14, 2026, at 19:00 UTC. Check the Roblox event page for any schedule changes.
Is the UFO Invasion the same as the Alien Biome?
No. UFO Invasion is Update 11, which launched November 2. The full Alien Biome is a separate Update 12 release scheduled for November 7.
What makes the new biome the biggest?
Update coverage describes it as the biggest new zone, but the public event listing does not quantify its size or publish a map. The actual layout should be checked after the area opens.
Which Alien Biome pets and eggs are confirmed?
The event teaser does not name specific pets or eggs. Wait for the live Index or a developer-published list before treating any roster as confirmed.
Is there a confirmed Speed requirement?
No exact Speed requirement is stated in the event description reviewed for this article. Check the live zone instructions when Update 12 becomes available.
Where can I check the official start time?
Use the Roblox NEW ALIEN BIOME event listing and the in-game countdown. Both are more useful than a reposted countdown screenshot.
Sources and image credits
- Roblox: NEW ALIEN BIOME event listing — official event title, description and scheduled window.
- StealAnEgg.app: Update 10.5 — creator-group announcement summary for the November 7 biome date.
- STEAL EGG: Update 11 — UFO Invasion — distinction between the current UFO event and the full biome release.
- Steal an Egg Wiki: New Alien Biome — event-record details and a clear list of unconfirmed gameplay information.
Editorial note: This is a pre-launch countdown guide checked November 4, 2026. The images show earlier Steal an Egg gameplay and collection interfaces; none is presented as leaked Alien Biome footage. The page should be updated only when the new area’s actual requirements, eggs, pets and rewards can be verified.
