What to Upgrade First in Steal An Egg On KuKirin

Steal An Egg On KuKirin never asks you to pick one progression track and stick to it. Speed upgrades, new eggs, better Kukirin motorcycles, treadmill levels, trails and eight Robux gamepasses are all open at the same moment, and all of them pull on the same cash balance. So "what should I upgrade first?" is really a repeatable decision, not a one-time choice — and the verified costs and payoffs point to a clear default order:

1. Buy eggs you can afford, and keep your speed climbing. Pets pay cash every second, and every new species permanently adds speed and cash through the index, so eggs fund everything else. Speed decides every dinosaur chase and gates stealing from stages above your level.
2. Save 400,000 for the first shop Kukirin once it's in reach — a better bike both earns more and moves faster.
3. Spend leftovers on trails, pet upgrades and treadmill levels, and treat Robux gamepasses as optional shortcuts, not requirements.

Here's the evidence behind that order, and when to deviate from it.

Every option is open at once

The game's official description lays out the parallel tracks directly: ride the KuKirin to steal eggs, outrun angry dinosaurs, hatch eggs into rare pets, earn money from your pets, upgrade your speed, and unlock faster motorcycles and rarer eggs. Play confirms these compete for one balance in real time. In one streamed session, a single player reads an egg price off an in-game sign (1,500 — "that's easy"), buys the egg, announces "let's upgrade our speed," checks whether he can afford the next shop Kukirin ("I can afford a better Kukirin. No, not yet"), and settles for a treadmill level instead. A stats site separately lists all eight gamepasses as simultaneously for sale.

That session supplies most of the observed prices below. Treat its results as demonstrations of what's possible, not guaranteed outcomes for every account.

What each option costs and verifiably does

Four tracks — speed levels, treadmill levels, trails and pet upgrades — never have their cash prices stated in any available source, so they're ranked here by effect, not price. The gaps don't stop you from acting: every purchase above can be judged in game from its price tag and this table of known consequences.

The order to buy in

1. Buy an egg whenever a new species is in budget. Pets are the income engine: a starter-tier hatch earned 60 per second while a Velicoraptor pull earned 11,000, and one player's income had climbed to 50,000 and called it "already pretty good." The compounding part is the index — asked where all his speed came from without Robux, the session's strongest player answered, "I collected a lot of animals for the index… When you get a new pet, it gives you speed and cash." Each new species advances both the money and speed tracks at once, which is why egg purchases are self-funding. Players buy extra eggs specifically to chase new species — one bought a second egg purely to hunt a 1% drop.

2. Keep speed upgrades going between egg purchases. Speed is both defense and access. In a chase, a faster player is simply untouchable — "you're way too fast… that was impossible to do." And speed is what lets you steal from stages above your recommended level, the main early route to rarer, better-paying eggs. One player regularly steals from a stage recommending 17 million while holding "less than three," and says it "works easily" now that he has a mythic pet. Know the limits, though: another attempt on a 17-million stage with only 500,000 failed ("I didn't make it"), and one player hatched an egg first specifically to "gain speed, because otherwise it won't work." The real threshold sits somewhere between 500,000 and just under 3 million against a 17-million stage — it isn't pinned down, and that success came from one session. Try the next stage when your speed comfortably clears your current one, and jump between stages rather than riding in, because entering a stage can knock you over. More on the mechanics in how to steal eggs and how to escape dinosaurs.

3. Save 400,000 for your first shop Kukirin. The first step up from the starter bike costs 400,000 cash ("Okay, 400,000, I need 400,000?"), and the ladder continues upward — about a million for the black model and roughly eight million at a later tier. The payoff is doubled, which is why the player bought up tiers: "It earns more. Ooh, and has more speed." You don't need to pay Robux to shortcut the grind, either — offered the 2x cash pass at roughly 300 Robux, the same player laughed it off: "They must be crazy. 400,000 is easy." Details on the bikes are in how to unlock motorcycles.

4. When choosing between two eggs, pick the legendary over the epic. The session corrected this exact mistake out loud — "An epic is probably better than a legendary." / "No, no, a legendary is better" — and the buyer switched on the spot.

5. Time your hatches for night. Observed hatch times run from 24 seconds to a full hour, so waiting is a real cost — and night reduces it for free: "They open faster at night." Steal with enough time to get home before nightfall, then start the hatch. The full process is on how to hatch eggs.

6. Put spare change into trails, pet upgrades and the treadmill — in that spirit. A trail "boosts your bonus," and upgraded raptors "earn more cash," though neither price is documented. The treadmill is the observed fallback purchase — bought exactly when the next Kukirin was out of reach — but since no source states what treadmill levels actually boost, treat it as leftover-cash spending rather than a planned power spike.

The Robux menu, priced

If you do consider spending Robux, the full paid menu is fixed and known:

The effects are known from the pass names: a cash multiplier, tiered speed multipliers from 2x to 32x, and a Kukirin bike sold directly. What x2 Growth multiplies beyond its name is not documented, and neither the speed passes' exact in-game values nor whether they stack with bike speed are documented. Play also shows a roughly 300-Robux charge to skip egg-hatching time — declined by a player holding 24 million cash, who preferred to wait for night.

None of it is required: the fastest player in the session built his speed from index collecting while insisting he hadn't spent a single Robux. Before you spend anything real, it costs nothing to check whether a code is active on the Codes page, and how to earn money covers growing the balance these decisions come from.

When to re-evaluate your next purchase

Re-run the comparison after every payout — the menu never closes:

• A dinosaur caught you, or a steal above your stage keeps failing → more speed upgrades, or a better pet from an egg.
• Your income feels flat → hunt a species you're missing from the index; the pets list shows what's out there. Per-second rates are compared in pet earnings.
• The next shop Kukirin's price is within reach → buy it; it pays in both speed and income.
• Night is falling → start hatches instead of buying anything.
• Nothing else is affordable → treadmill level, trail or pet upgrade with the change — with speed and eggs as the planned buys, that's still a better use than waiting.

If you're early and the loop itself is still new, how to play covers the basics first.