Fab Manual

1. What is GPU?

Graphics Processing Utility (GPU) is a gamified, virtual silicon-farming game on Robinhood Chain — an EVM L2 settling on Ethereum. You burn $GPU tokens to deploy virtual Wafer Fabs and Cleanrooms in your own 3D warehouse. Those facilities produce rewards over time, paid out from a 50M $GPU Emission Reserve released via a Bitcoin-style halving curve.

Think of it like an incremental game where every action is on-chain: your fabs and cleanrooms are real state, your burns reduce the $GPU supply, and your rewards settle to your wallet.

Both Wafer Fabs and Cleanrooms accrue $GPU per second. Progression is wallet-wide: you raise your Warehouse Level to unlock more facility slots, more daily supply pods, and higher rarity pools. Cleanrooms earn bonus slots at higher levels; Wafer Fabs are claim-only in v1.

2. Quick start

1. 1

   Connect a wallet

   Open the Fab Floor and sign in with email or Google to create a Privy embedded EVM wallet. You can also link MetaMask, Rabby, or Robinhood Wallet. Unauthenticated guest addresses are not supported because they cannot securely authorize transactions.

2. 2

   Deploy your first facility

   Tap Deploy. Pick a Wafer Fab or Cleanroom, burn the required $GPU + small ETH fee, and it appears in your warehouse.

3. 3

   Let it produce

   Nodes accrue rewards every second based on your components’ grow-power and your share of the global halving emission. Watch pending rewards tick up in your HUD.

4. 4

   Claim, open supply pods, upgrade

   Claim to cash out (2% fee, 1h cooldown), open Supply Pods to upgrade your components, or upgrade your warehouse to unlock more facilities and pods. Repeat.

3. Nodes: Fabs vs Cleanrooms

Node capacity scales with your Warehouse Level: 2 per family at L1, growing to 8 per family at L10 — and Cleanrooms add bonus slots on top (+2 at L5, +3 at L7, +4 at L9). Each node is an independent entity with its own components and production rate.

4. Levels & Auras

Your nodes’ visual level mirrors your wallet’s Warehouse Level (L1 → L10). Each level upgrades the fab’s material era — rough steel through reinforced and high-tech to a black-and-gold prestige finish — and grows its size, making progress visible at a glance on the compound.

Production itself comes from your components, not the visual level: your rate = min(your GP / network GP, 30%) × E(t) × welcome boost — where GP (grow-power) is the Formula D multiplier of your installed components.

Higher levels also pump up the scene’s bloom intensity — a max-level compound looks visibly brighter than a fresh one.

Higher levels upgrade the fab’s material era (rough steel → reinforced → high-tech → black-and-gold prestige), grow its size, and light a powered deck ring at the milestone levels. The per-component rarity glow layers on top.

5. Components & Supply Pods

Each node has 4 component slots. Components are earned by opening Supply Pods — 10,000 $GPU each (split burn / reserve / treasury), plus a flat 0.00002 ETH protocol fee. Your daily crate limit scales with Warehouse Level — from 3/day at L1 up to 20/day at L10, per node type. Every drop has a rarity tier that multiplies the node’s output:

A node’s total multiplier uses Formula D: the average of its 4 slots’ durability-adjusted multipliers, raised to the power 0.75 (capped at 500×), then multiplied by a rarity-boost stack (Epic ×1.05, Legendary ×1.15, Mythic ×1.4, Divine ×2.0 per component). Empty slots count as Common. Higher rarity pools unlock with Warehouse Level: Legendary at L4, Mythic at L6, Divine at L8. Drop odds are published and a bad-luck-protection (pity) system guarantees dry streaks on the top tiers can’t run forever.

Slot compatibility: Wafer Fab components fit only in Wafer Fabs, Cleanroom components fit only in Cleanrooms. Each component has a specific slot (you can’t put a Lithography Machine in a Wafer Stack socket).

Use the Inventory page to move components between nodes — unequip from one, equip on another. The displaced component falls back to your locker.

Every slot, every rarity

Wafer Fab slots	Common1.00×	Uncommon1.80×	Rare3.00×	Epic10.00×	Legendary50.00×	Mythic300.00×	Divine3000.00×
Lithography Machine
Wafer Stack
Etch Chamber
Power Bus

Cleanroom slots	Common1.00×	Uncommon1.80×	Rare3.00×	Epic10.00×	Legendary50.00×	Mythic300.00×	Divine3000.00×
Dicing Saw
Packaging Line
Test Handler
Cooling Array

Each tile shows that slot at that rarity — rarer tiers add emissive glow that blooms in the scene. The live fab preview above shows the hero model these install into.

6. Earning & Claiming

Rewards accrue continuously, per second, based on:

• Your grow-power (Formula D multiplier summed across your nodes’ components)
• Your share of total network grow-power — capped at 30% per user
• The global halving emission rate E(t) (see section 9)
• Your welcome boost (8× → 1× over your first 72 hours)

Pending rewards are kept server-side and streamed to your HUD every ~10s. When you Claim All, every node’s pending balance is zeroed and the reserve wallet pays out the net amount to your wallet (2% fee retained in the reserve to keep emissions solvent). Claims have a 1-hour cooldown per wallet.

Crate installs and warehouse upgrades internally accrue first, so you never lose production between actions — you’re always paid at the rate you actually had for the time you had it.

7. Warehouse Levels

Your Warehouse Level (L1 → L10) is your wallet-wide progression track. Each upgrade costs $GPU — from 1,000 GPU for L2 up to 120,000 GPU for L10, split 50/30/20 burn / reserve / treasury — plus a flat 0.00001 ETH fee. Each level unlocks:

• More node slots per family (2 at L1 → 8 at L10; cleanrooms +2/+3/+4 bonus at L5/L7/L9)
• A higher daily crate limit (3/day at L1 → 20/day at L10, per node type)
• Higher rarity pools (Legendary at L4, Mythic at L6, Divine at L8)

Upgrades have a 12-hour cooldown. In a hurry, you can expedite: pay 0.005 ETH to skip the cooldown for one upgrade (the fee goes to the treasury).

See the full level table on the Tokenomics page.

8. Fees

Mints split 70/30 burn/treasury on the GPU leg; warehouse upgrades and crates split 50/30/20 burn/reserve/treasury. See Tokenomics for the live numbers straight from the backend.

9. How emission works

GPU uses a halving emission curve. Global GPU issuance starts at 20.7 GPU/sec at genesis and halves every 14 days until the Emission Reserve is fully paid out.

E(t) = 20.7 GPU/sec × 0.5 ^ (t / 14d)

Day   0  : 1.8M GPU emitted
Day  14  : 50% of lifetime emitted
Day  28  : 75% of lifetime emitted
Day  56  : 94% of lifetime emitted
Lifetime total: 50M GPU — the whole Emission Reserve,
5% of the 1B fixed supply

Each user earns a share of each second’s emission, proportional to their grow-power (sum of component multipliers across their nodes):

user_rate = min(your_gp / network_gp, 30%) × E(t) × welcome_boost

Two key mechanics:
  • Share cap: no user can capture more than 30% of emission
    (prevents lottery-in-thin-network wins)
  • Welcome boost: new users get 8× multiplier for 72h,
    linearly decaying — critical for latecomer retention

Why does emission halve? To front-load excitement during the first 2 weeks while still leaving meaningful yields for latecomers. By day 14, 75% of lifetime GPU has been distributed — but latecomers with the welcome boost still earn well for their first 72 hours.

You can always see current global emission and your share on the Treasury Core page — it’s fully public.

10. Safety & FAQ