Upgrades

Introduction

The Upgrades hub covers every upgrade path in Steal An Egg and how to spend your money for maximum progress. The most important upgrade in the game is the treadmill — training on it raises your Speed stat, and each Speed milestone unlocks a new biome with better eggs and pets. Around the treadmill, you also upgrade your base for better storage and defense, and your storage capacity so you can hold more pets and eggs. This hub explains how Speed works, the upgrade order that gets you to the best biomes fastest, and the costs and priorities that matter at each stage of progression.

Upgrade Priorities

Upgrade Paths

Core Mechanics

Upgrades in Steal An Egg revolve around the treadmill, which is the game's central progression machine. Training on the treadmill raises your Speed stat, and hitting Speed milestones unlocks new biomes — each biome holds better eggs, pets and income, so Speed is effectively the gate to all late-game content. Storage upgrades let you hold more pets and eggs, which directly increases your hatching throughput and your income potential. Base upgrades improve your defense and capacity, protecting your collection from rivals and giving you more room to operate. Because the treadmill is the key to biome access, upgrading it early and consistently is almost always the best use of money, and planning your Speed milestones around the biomes you want to reach makes the whole ladder faster.

Advantages

A clear upgrade priority saves players enormous amounts of wasted money. The most common early mistake is spending on base or cosmetic upgrades before the treadmill, which slows biome access and therefore slows everything else. Knowing that Speed unlocks biomes, and that biomes hold the better eggs and pets, lets you sequence your spending for maximum compounding. The storage guidance also prevents a hidden bottleneck — many players hit a wall because their storage fills up and they cannot hatch or sell fast enough to keep the loop moving. With a clear priority order, every dollar you earn pushes you toward the next biome, the next egg, and the next income tier.

Challenges

Upgrade data carries real uncertainty because the exact Speed thresholds, upgrade costs and biome unlock requirements are not published by the developer. The Speed milestones that gate biomes are community-reported estimates and can shift with balance patches. Upgrade costs also change as the game balances, so a cost table can be outdated quickly. Some players find the treadmill loop repetitive, since it is a single activity that gates so much content. Treat the priority order here as solid guidance, verify the actual Speed thresholds and costs in your server, and expect the ladder to change as the game updates. Above all, treat the upgrade ladder here as a living guide that moves with the game, and revisit it after every patch to keep your spending aligned with the current build.

Frequently Asked Questions

Quick Tips