Split Mountain for Eggs is a Roblox simulator built by xFrozen x Dudes in which you crack open a mountain, dash inside to grab eggs, and hatch them into pets that produce cash. Progress comes from lifting weights to raise your strength, which decides how deep the mountain opens and which egg tiers you can reach. The game is listed as updating every Saturday.
Quick answer: Train strength on the weight pad, split the mountain, run in and grab eggs, then carry them back to your base before the open-time gauge expires to hatch pets that earn cash per second.
The core loop in Split Mountain for Eggs
Every run follows the same rhythm. You stand on the training pad and lift a weight to build strength, then trigger a split that forces the mountain open. A gap appears, and you sprint through it to collect the eggs inside.
Each staff has an “open time,” the number of seconds the mountain stays open before it slams shut. If the gauge runs out while you are still inside, the mountain crushes you and you lose any eggs you were carrying that have not reached your base. A “SAFE ZONE” platform marks where you launch from, and green ground arrows point toward the split line.
Back at the base, eggs hatch into pets. Pets generate cash per second, and that cash even accumulates while you are offline. Roblox Premium players receive a 15% cash bonus. You spend the cash on base multipliers, movement speed, carry capacity, heavier weights, and rebirths.
Strength, weights, and how deep you split
Strength is the number that controls how far the mountain opens. You raise it by training with weights on the pad, and heavier, higher-rarity weights add far more power per lift. A level 1 character with no strength only cracks a shallow gap, while massive strength tears the mountain down to its deepest layers.
Weights run from the starting Dumbbell Sphere up to the Titanium Car, climbing in rarity and power at every step. The power value is the gain each weight gives.
| Weight | Rarity | Mass | Power |
|---|---|---|---|
| Dumbbell Sphere | Uncommon | 25 kg | 2 |
| Strawberry Dumbbell | Rare | 50 kg | 5 |
| Wooden Dumbbell | Epic | 75 kg | 20 |
| Gear Dumbbell | Legendary | 100 kg | 100 |
| Nuclear Dumbbell | Legendary | 125 kg | 500 |
| Present Dumbbell | Mythic | 150 kg | 2.5K |
| Donut Dumbbell | Divine | 175 kg | 12.5K |
| Pancake Dumbbell | Divine | 200 kg | 60K |
| Frozen Dumbbell | Secret | 225 kg | 300K |
| Rocket Dumbbell | Cosmic | 250 kg | 1.5M |
| Anvil Dumbbell | Cosmic | 275 kg | 7.5M |
| Burger Dumbbell | Eternal | 300 kg | 37.5M |
| Skull Dumbbell | Eternal | 325 kg | 180.8M |
| Rubik Dumbbell | Special | 350 kg | 937.5M |
| Spike Dumbbell | Special | 375 kg | 5B |
| Gold Dumbbell | LAW | 400 kg | 25B |
| Diamond Dumbbell | LAW | 425 kg | 125B |
| Bunny Dumbbell | Nightfall | 450 kg | 625B |
| Birthday Dumbbell | Dessert | 475 kg | 3.1T |
| Titanium Car | Titanium | 500 kg | 15.6T |
Robux strength multipliers sit alongside the weights and scale power sharply, running from x4 up to x1024. Stacking those multipliers is how players jump from a few thousand strength to millions and then quintillions in a single session.
Mountain zones and egg tiers
The mountain is layered by color, and each color holds a higher tier of egg. Weak splits only reach the outer green rock. As strength rises, the gap opens past blue, purple, yellow, pink, and gray before reaching the Law zone at the very bottom.
| Zone | Egg tiers |
|---|---|
| Green | Common / Uncommon |
| Blue | Rare / Legendary |
| Purple | Divine |
| Yellow | Secret / Cosmic |
| Pink | Eternal |
| Gray | Special |
| Law | Law-tier |
Reaching the deepest zones takes enormous strength. A run into the pink eternal layer needs around 600 trillion strength, and the final Law zone, home to Mamut and Gold Mamut eggs, demands a maximum-power split from roughly a quintillion strength.
Carry capacity limits how many eggs you can haul out at once. It starts at a single egg and upgrades through cash purchases to as many as six, so deeper runs become worthwhile only once you can grab several eggs before the mountain closes.
Staffs and split types
A staff sets your luck multiplier and your open time. Higher luck improves the odds of rare eggs, while a longer open time gives more seconds inside the mountain before it shuts. Staffs upgrade from the common Wooden Stick to special-tier tools, with two more tied to events.
| Staff | Rarity | Luck | Open time |
|---|---|---|---|
| Wooden Stick | Common | x1.0 | 7s |
| Stone Pillar | Common | x1.5 | 8s |
| Smacker | Uncommon | x2.0 | 8s |
| Cobra | Rare | x2.5 | 9s |
| Pharaoh Wand | Epic | x3.0 | 9.5s |
| Lava Wand | Legendary | x3.5 | 10s |
| Star Wand | Secret | x5.0 | 11.5s |
| Atlantis Fork | Secret | x5.5 | 12s |
| Golden Spatula | Special | x7.0 | 13.5s |
| Toilet Plunger | Special | x7.5 | 14s |
| Mailbox | Special | x8.0 | 14.5s |
| Alien | Special | x8.0 | 15s |
| Warden | Special | x8.5 | 15.5s |
Two staffs come from the Event Pass rather than the normal shop. Zeus Lighting carries a 125% luck value, and Prestige Zeus Lighting is always 150% stronger than your best staff, a built-in boost that keeps it ahead of whatever else you own.
Splits also come in stronger forms that stack luck on top of your staff. A standard Power Split is the baseline, an Ultra Split adds x5 Luck, and a Thunder Split performed with Prestige Zeus Lighting applies x10 Luck for far better egg rolls.
Rebirths and cash multipliers
A rebirth resets your cash but permanently raises your cash multiplier. The chain doubles at each step, from x2 at Rebirth 1 up to x2048 at Rebirth 11, which is the maximum. Because the multiplier compounds, each rebirth makes the next strength and pet goals far quicker to reach.
| Rebirth | Cash multiplier |
|---|---|
| Rebirth 1 | x2 |
| Rebirth 2 | x4 |
| Rebirth 3 | x8 |
| Rebirth 11 (Max) | x2048 |
Rebirths also gate progress toward the upper egg zones. Reaching high rebirth tiers unlocks the Secret and Divine hatches, such as the Divine Capybara, Secret Kangaroo, and Secret Diamond Ostrich seen around Rebirth 7.
Pets, cash income, and the Hydra
Hatched eggs become pets that each earn a set amount of cash per second, and income scales dramatically across tiers. A Special Mothman earns $2.1B/s, a Special Shark $253.5B/s, and a Cyber Gorilla $557.7B/s. The game also has an “EQUIP BEST” button in the Pets Active menu that automatically fits your strongest pets into your slots.
Several pets are sold directly in the Exclusive Shop for Robux. The Hydra is the top option at 12,000 Robux and lists at $1T/s, with the Velicoraptor at 4,400 Robux ($250B/s), the Unicorn at 156 Robux ($40M/s), and the Jellyfish at 40 Robux ($20M/s). The Exclusives Pack sells in four tiers from 50 to 400 Robux, and a Magma Dragon Egg can be bought for 60 Robux with its own hatch chances.
Additional multipliers come through gamepasses. x2 Cash Gains costs 60 Robux, extra animal slots run 76 Robux for two or 120 Robux for four, and the VIP Gamepass is 399 Robux.
Server events and radioactive pets
Server-wide events change the game for everyone at once. When a Radioactive Event starts, a banner reads “Radioactive Event has started,” and eggs that spawn during the storm, along with pets you own, take on a radioactive status that sharply raises their income.
The effect scales with the pet. A Hydra that normally lists at $1T/s climbs to $3.3Qa/s once it becomes radioactive, and radioactive variants of eggs such as the Polarbear and the Cyber Gorilla appear only while the event runs. Timing a split to catch these eggs is how players build their highest-earning pet lineups.
Taken together, these systems make Split Mountain for Eggs a straightforward climb: lift to raise strength, split deeper to reach better eggs, hatch stronger pets for more cash, and rebirth to multiply everything. The Robux shop, event staffs, and radioactive boosts simply accelerate a loop that stays the same from the first weak split to the Law-tier Mamut run.
