Arms are the core strength upgrade in +1 Lift Rock For Treasure, the Roblox incremental simulator by ErEr Games. Each Arm you equip raises how much Power you gain while training on the lift pad, which in turn lets you break rocks faster and reach deeper treasure zones. You buy them from the shop at the center of the map, paying either in-game cash or Robux.
Quick answer: There are 15 Arms total. Disco gives the biggest Power boost at 50K, while Dirt is the cheapest starter at $100. Two Arms (Glass and Glitch) are Robux-only Exclusives.

Every Arm in +1 Lift Rock For Treasure
The table lists each Arm in order of Power boost, from the entry-level Dirt up to the Celestial-tier Disco. Cash prices use the in-game dollar currency; the two Exclusive Arms are bought with Robux instead.
| Arm | Rarity | Cost | Power boost |
|---|---|---|---|
| Dirt | Common | $100 | 2 |
| Wood | Uncommon | $1K | 5 |
| Cobblestone | Uncommon | $25K | 10 |
| Brick | Rare | $100K | 20 |
| Gold | Rare | $300K | 50 |
| Glowstone | Epic | $1M | 100 |
| Obsidian | Epic | $5M | 200 |
| Glass | Exclusive | 59 Robux | 350 |
| Diamond | Legendary | $100M | 500 |
| Lava | Legendary | $500M | 1K |
| Emerald | Mythic | $6.5B | 2.5K |
| Glitch | Exclusive | 399 Robux | 3.75K |
| Bedrock | Secret | $200B | 5K |
| Nuclear | Secret | $1.5T | 10K |
| Disco | Celestial | $20T | 50K |
Glass and Glitch sit outside the cash progression entirely. You cannot unlock them by grinding currency, only by spending Robux, so plan your cash upgrades around the Arms you can actually earn.

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Why Power boost matters
The Power boost on each Arm sets how fast your Strength and Level climb while you stand on the lift pad or a gym power platform. A higher boost means rocks break sooner, which opens the path into better luck zones where rarer treasure spawns. Since treasure sells for more at higher rarities, upgrading your Arm feeds directly back into the cash you need for the next one.
The jumps between tiers grow steeply. Obsidian doubles Glowstone at 200 Power, Diamond leaps to 500, and the Secret and Celestial Arms scale into the thousands. Disco tops the list at 50K Power, far ahead of every other option, making it the long-term goal for players grinding toward the deepest zones.




