[Roadmap] Shop + shop items

[Otaiki1]

Overview

A persistent in-game shop accessible from the lobby. Players spend CELO or Celo stablecoins (USDT/USDC) to purchase items that enhance their game experience.

Status: Post-MiniPay launch roadmap.

Item Categories

Consumables (single-use, per game)

Item	Price	Effect
Extra Revival (1×)	$0.001 USDT	One extra revival for the current game
Extra Revival (3× bundle)	$0.002 USDT	Three extra revivals
Score Boost Potion	$0.005 USDT	×1.5 base points for one full game
Shield	$0.003 USDT	Prevents one game-over by giving an emergency empty row
Rotate Pass — Single Game	$0.01 USDT	Unlocks piece rotation for one session
Rotate Pass — Weekly	$0.25 USDT	Unlocks piece rotation for the full current epoch

Cosmetics (permanent, wallet-linked)

• Board skins — replace default board background with pattern/image
• Piece colour packs — custom piece colour palette replacing defaults
• Tray skins — change the yellow tray background
• Priced $0.10–$0.50 USDT each

Season Pass (weekly subscription)

• Doubles leaderboard points earned during the epoch
• Access to exclusive piece skins
• $1.00 USDT per epoch

Technical Architecture

• Shop items defined on-chain or in backend config (not hardcoded in frontend)
• Purchases are ERC-20 (USDT) transfers to the treasury address
• Cosmetic ownership stored on-chain (NFT or simple mapping) — linked to wallet
• Consumable effects applied locally and included in on-chain move log where they affect score

Contract change required: Yes (item ownership mapping, purchase functions)