Rebirth is the single most important progression mechanic in Survive LAVA for Brainrots on Roblox. It trades your accumulated speed for permanent jump height increases and stacking cash multipliers — two things you absolutely need to reach the higher platforms where legendary, mythic, and secret brainrots spawn. Losing speed stings, but skipping rebirth means you'll hit a hard wall on the map.
Quick answer: Each rebirth resets your speed to 16 but permanently grants +3 jump height and an increasing cash multiplier (1.5x at level 1, scaling to 7x at level 12). You need a specific speed level and a specific brainrot to qualify for each tier.
Rebirth mechanics and what gets reset
When you rebirth, only your speed resets — back down to 16. Your money carries over, and any brainrots you own remain in your collection unless they were consumed as the rebirth requirement. Mutations on your brainrots also persist through the reset, so mutated brainrots that aren't sacrificed stay intact and keep generating income.
The two permanent rewards you receive are +3 jump height and a cash multiplier boost. Both stack with every subsequent rebirth. After all 12 current levels, you'd have +36 total jump height and a 7x cash multiplier. That multiplier also compounds with other earning boosts like the 2x Money gamepass and mutation bonuses, making late-game income dramatically higher than what new players earn.
Speed itself is purchased at the Upgrade Shop in increments of +1, +5, or +10, with costs rising as you go higher. After a rebirth, you'll need to buy it all back from scratch — which is why the cash multiplier matters so much. Each rebirth makes the next speed grind faster.
All 12 rebirth levels, speed requirements, and rewards
There are currently 12 rebirth levels in the game. Each one demands a higher speed threshold and a different brainrot, with rarer brainrots required at higher tiers.
| Rebirth | Speed | Required Brainrot | Jump | Multiplier |
|---|---|---|---|---|
| 1 | 41 | Boneca Ambalabu | +3 | 1.5x |
| 2 | 56 | Cacto Hipopotamo | +3 | 2x |
| 3 | 76 | Ballerina Cappuccina | +3 | 2.5x |
| 4 | 96 | Cocofanto Elefanto | +3 | 3x |
| 5 | 116 | Garama | +3 | 3.5x |
| 6 | 141 | Udin Din Din Dun | +3 | 4x |
| 7 | 166 | La Vacca Saturno Saturnita | +3 | 4.5x |
| 8 | 186 | Las Vaquitas Saturnitas | +3 | 5x |
| 9 | 201 | Gorillo Watermelondrillo | +3 | 5.5x |
| 10 | 216 | Compactaroni Diskaloni | +3 | 6x |
| 11 | 226 | Chillin Chilli | +3 | 6.5x |
| 12 | 236 | Crazylone Pizaione | +3 | 7x |
The jump from rebirth 3 to rebirth 4 is where many players notice a significant power spike. At 3x cash, rebuilding speed after a reset becomes noticeably quicker, and the +12 total jump height opens up access to mid-tier platforms on the map.
How to perform a rebirth
Step 1: Reach the required speed level by purchasing upgrades at the Upgrade Shop. Make sure you also have the specific brainrot needed for your current rebirth tier in your collection.
Step 2: Open the Rebirth menu by clicking the Rebirth icon on the left side of the screen. The interface will show whether you meet both the speed and brainrot requirements.
Step 3: Click the Rebirth button to confirm. Your speed drops back to 16, and you immediately receive the +3 jump height and the new cash multiplier. The brainrot used as the requirement is consumed in the process.
There is also a Robux skip option if you don't meet the requirements. The cost varies — one version of the game lists it at 44 Robux, while another lists 67 Robux, so the exact price may depend on the current game version or which specific requirement you're bypassing.
When to rebirth for maximum efficiency
Rebirthing too early can leave you stuck. If your passive income from brainrots isn't high enough to quickly buy back speed upgrades, you'll spend a long time grinding back to where you were — except now with a slightly better multiplier that doesn't help much at low income levels.
Before pulling the trigger, make sure you have high-rarity or mutated brainrots generating solid passive cash. Brainrots with the moon glow mutation (available during moon events) are particularly good income generators. You also want enough money saved to repurchase speed upgrades rapidly after the reset, rather than waiting for passive income to trickle in.
A practical rule of thumb: if surviving rounds feels comfortable and you're no longer struggling to hit the speed requirement, it's a good time to rebirth. The compounding multiplier means each subsequent rebirth becomes easier to recover from, so the early rebirths are the hardest and the later ones snowball.
Why rebirth is not optional
Jump height is the gatekeeper for late-game content. Without it, you physically cannot reach the tall platforms where epic, legendary, mythic, and secret brainrots spawn. There is no other way to increase jump height in the game — rebirth is the only source. Skipping it means you'll be permanently locked out of the rarest collectibles and the highest-value areas of the map.
The cash multiplier stacking also creates an exponential advantage over time. A player at rebirth 12 with a 7x multiplier earns money roughly 4.7 times faster than a player at rebirth 1 with 1.5x, assuming identical base income. Combined with mutation bonuses and gamepasses, high-rebirth players can rebuild their speed in a fraction of the time it took during their first few runs. The system is designed to reward commitment to the rebirth cycle, and the game's endgame content is balanced around players having completed multiple rebirths.