Steal an Egg Tier List: Best Pets Ranked by Income (Sept 2026)

Overview

The definitive Steal an Egg tier list for September 2026 ranks pets by their verified money-per-second income, with the Shattered Colossus ($3.5B/s) and Nightflame ($3B/s) leading the post-Rift meta. Because the game's progression system scales entirely on passive income generation, your pen's performance depends less on rarity color and more on the exact income/s figure displayed in the Pet Index, adjusted for size and mutation multipliers. This guide breaks down the current top earners, explains how tier rankings shift with updates, and shows how to optimize your pet slots for maximum treadmill and base progression.

How the Steal an Egg Tier List Works

Community and publisher tier lists for Steal an Egg are built around a single metric: money generated per second. A verification-focused wiki notes that the developers only officially recognize five pet labels—Huge, Mutated, Secret, Eternal, and Divine—confirmed through in-game badges like `Hatched Secret!` and `Divine Trail!`. Exact S-to-D power rankings are not officially published, so guides derive tiers from the Pet Index's income data.

Rarity tiers generally align with income ranges, but the correlation is not perfect. As of September 2026, base income by rarity spans from Common ($1–$6/s) and Uncommon ($8–$18/s) up to Legendary ($1.8K–$130K/s), Mythic ($16K–$750K/s), Cosmic ($220K–$17.5M/s), Secret ($3.5M–$215M/s), Eternal ($65M–$900M/s), and Divine ($1B–$3.5B/s). Most adjacent tiers jump roughly an order of magnitude, though the step from Cosmic into Secret is only about a 4x increase. Always check the actual money-per-second in the Pet Index rather than judging a pet by its rarity color alone, as overlap between tiers is common.

Post-Rift Top Pets (SS and S Tier)

Tier lists change rapidly because game updates and new content reshuffle the income ceiling. On August 29, 2026, pre-Rift rankings listed the Kitsune ($1.8B/s) as the single highest-earning pet. Following the Rift Machine update, post-Rift lists from September 9–11, 2026 moved the Shattered Colossus and Nightflame to the top. Always check the publication date on any Steal an Egg tier list, as older guides will miss Rift-exclusive earners.

The current post-Rift rankings place the following pets in the highest brackets:

• Shattered Colossus — Divine — $3.5B/s
• Nightflame — Divine — $3B/s
• Kitsune — Divine — $1.8B–$3.2B/s
• Unicorn — Divine — $1B/s
• Void Serpent — Eternal — $900M/s
• Gorilla King — Eternal — $880M/s
• Shattered Drake — Eternal — $800M/s
• Oni Tiger — Eternal — $600M/s
• World Eater — Eternal — $500M/sThese nine pets occupy the SS Tier in recent GameRant rankings, while the Eternal Lunar Dragon ($250M/s), Mutant Shark ($204M/s), and Mosasaurus ($180M/s) round out the S Tier. The Rift Machine introduces three sacrifice pools that grant exclusive Legendary through Divine pets, fundamentally expanding the endgame income ceiling beyond traditional biome farming.

Mid-Game and Early Progression Tiers

Most players spend the majority of their run in the B and C tiers, where income jumps fund the Speed training required to unlock higher biomes. In the Secret tier, the Stag ($145M/s, Cherry Blossom) and Shardwing ($145M/s) lead, followed by the Cosmic Dragon ($60M/s), Tralaledon ($32M/s), T-Rex ($25M/s), Kraken ($15M/s), Cerberus ($8M/s), Yeti ($5M/s), and King Snake ($3.5M/s).

Cosmic and Mythic pets form the reliable mid-game backbone. Top Cosmic earners include the Koi ($12M/s), Snowy Owl ($7.5M/s), La Vacca Saturno Saturnita ($2.2M/s), Beluga Whale ($850K/s), Whale Shark ($700K/s), and King Mammoth ($400K/s). Mythic performers like the Red Panda ($450K/s), Ankylosaurus ($120K/s), Cosmic Gorilla ($180K/s), and Chillin Chilli ($55K/s) bridge the gap to Secret territory. Early-game D-tier pets (Legendary and below) generate $1/s to $30K/s and are intentionally designed to be easier to acquire with lower Speed thresholds, allowing new players to fund treadmill upgrades before attempting dangerous biome runs.

How Size and Mutations Change Tier Rankings

Base income numbers are only the starting point. Size and mutation multipliers stack directly on top of a pet's base rate, meaning a larger or mutated version of the same pet will out-earn a standard hatch of identical rarity. The exact multipliers are not published by the developer, so the rate your pen displays is the only reliable figure.

Because of this stacking system, ranking by raw rarity can mislead in practice. A Mythic pet hatched from the Volcano biome can easily beat a standard Cosmic pet from the Forest once size and mutation modifiers are applied. Guides consistently advise sorting your active pen by actual income per second rather than rarity color. Always use the in-game "Equip Best" function after hatching a new batch, as pets only contribute to your economy if they are occupying active slots instead of sitting in storage.

When to Update Your Pen

Progression in Steal an Egg is gated by Speed thresholds, not just income. Each biome past the Forest requires a minimum Speed rating before its eggs become reachable, and carrying an egg applies a weight penalty that slows your escape. Experienced players aim 15–20% above the listed biome minimum before attempting runs.

Keep lower-tier pets until you secure direct replacements. Secret and Eternal pets remain strong earners across multiple rebirths, so do not discard them prematurely. Monitor update cycles closely, as new biome additions or Rift pool adjustments will periodically shift the income hierarchy. When in doubt, check the Pet Index's live money/s column to verify which animals are currently maximizing your passive output.