Game Store

---

​

Overview

Game Store is the execution layer for purchasing games. Responsibilities:

• Validate game from Registry
• Process payment
• Mint license via PGC-1

Game Store does NOT store metadata or governance logic.

---

​

Dependencies

---

​

Data Structures

​

PriceConfig

---

​

State

---

​

Functions

​

1. setPrice

Sets base price for a game. function setPrice(gameId, price, currency)

​

Params

​

Rules

• Only publisher
• msg.sender MUST match PGC1(contractAddress).getPublisher()
• currency MUST be a valid supported payment token
• Game MUST exist in Registry
• price MAY be 0 for free games

​

2. setDiscount

Sets discount in basis points. function setDiscount(gameId, discountBps)

​

Params

​

Rules

• Only publisher
• msg.sender MUST match PGC1(contractAddress).getPublisher()
• discountBps MUST be <= 10000

​

3. getFinalPrice

Returns final price after discount. function getFinalPrice(gameId): uint256

​

Returns

​

Logic

finalPrice = price - (price * discountBps / 10000)

​

4. buyGame

Executes purchase and mints license. function buyGame(gameId)

​

Flow

1. Fetch game from Registry
2. Validate status == approved
3. Validate game.contractAddress exists
4. Get PGC-1 contract
5. Get publisher:
   • publisher = PGC1.getPublisher()
6. Load PriceConfig
   • currency = prices[gameId].currency
7. Calculate finalPrice
8. Validate payment token and amount
9. Prevent duplicate purchase by checking PGC1.canAccessGame(msg.sender)
10. Calculate:
    • platformFee
    • publisherRevenue
11. Receive payment
12. Process split:
    • transfer(platformFee → treasury)
    • publisherBalances[publisher][currency] += publisherRevenue
13. Call PGC1.mintLicense(msg.sender, 0)
14. Revert whole transaction if mint fails

​

Internal Calls

• const game = Registry.getGame(gameId)
• const finalPrice = getFinalPrice(gameId)
• PGC1(game.contractAddress).mintLicense(msg.sender, 0)
• publisherBalances[publisher][currency] += publisherRevenue

​

Rules

• If finalPrice == 0, payment transfer MAY be skipped
• Game MUST have a valid PriceConfig before purchase (Including Free Game)
• Purchase, accounting update, and minting MUST be executed atomically
• Mint MUST only happen AFTER payment is recorded
• If mint fails → transaction MUST revert
• Double purchase MUST be prevented if the buyer already owns a valid license for the same game.

​

5. setPlatformFee

Updates platform fee. function setPlatformFee(feeBps)

​

Params

​

Rules

• Only governance
• feeBps MUST be <= 10000

​

6. withdraw

Withdraw publisher earnings per token. function withdraw(token)

​

Params

​

Rules

• Only publisher
• Balance MUST be > 0
• Withdrawal MUST revert if transfer fails

​

Behavior

• amount = publisherBalances[msg.sender][token]
• publisherBalances[msg.sender][token] = 0
• transfer(token → msg.sender)

​

7. setGovernance

Updates governance address. function setGovernance(governance)

​

Params

​

Rules

• Only current governance
• Governance MUST NOT be zero address
• Event SHOULD be emitted

​

8. setTreasury

Updates treasury receiver address. function setTreasury(treasury)

​

Params

​

Rules

• Only governance
• Treasury MUST NOT be zero address
• Event SHOULD be emitted

​

9. getPriceConfig

Returns pricing configuration for a game. function getPriceConfig(gameId)

​

Params

​

Returns

​

10. getPublisherBalance

Returns withdrawable publisher balance for a token. function getPublisherBalance(publisher, token)

​

Params

​

Returns

​

11. getPlatformFee

Returns current platform fee in basis points. function getPlatformFee()

​

Returns

​

12. getTreasury

Returns treasury receiver address. function getTreasury()

​

Returns

​

13. getGovernance

Returns governance address. function getGovernance()

​

Returns

​

14. getRegistry

Returns registry contract address. function getRegistry()

​

Returns

---

​

Payment Flow

Hybrid (Push + Escrow) Payments are split during purchase:

• Platform fee → sent directly to treasury
• Publisher revenue → stored in contract (escrow)

---

​

Flow

1. User pays finalPrice
2. Contract calculates:
   • platformFee
   • publisherRevenue
3. Execute transfers:
   • send platform fee to treasury
   • publisherBalances[publisher][currency] += publisherRevenue
4. Mint license

​

Withdraw

• Publisher MUST call withdraw(token) to claim revenue
• Treasury does NOT use withdraw, because platform fee is transferred directly during purchase

---

​

Revenue Split

---

​

Access Control

---

​

Requirements

• Game MUST be approved in Registry
• Registry MUST return a valid contractAddress
• Registry MUST return game status
• Store MUST be authorized minter in PGC-1
• PGC-1 MUST implement getPublisher()
• PGC-1 MUST implement canAccessGame(user)
• PGC-1 MUST implement mintLicense(to, expiresAt)
• Payment MUST succeed before mint

---

​

Notes

• Price is dynamic (not stored in Registry)
• Supports future extensions:
  • subscription
  • bundle
  • regional pricing