Games

Games

Joybit’s games are on-chain fee / reward flows wrapped in a conventional web UI. Where exact values matter, the contracts are the source of truth (fees and rewards are adjustable by the contract owner).

Overview

Game	Contract	Daily free play	Default paid fee	Default reward
Match-3	Match3Game	Yes (24h cooldown)	0.001 ETH	Per-level reward (defaults to 0 until configured)
3-Card	CardGame	Yes (24h cooldown)	0.002 ETH	100 JOYB on win
Daily Claim	DailyClaim	N/A	N/A	100 JOYB + 10 JOYB × (streak - 1)
Basebound	BaseboundGame	Yes (24h cooldown)	0.001 ETH	Off-chain progression (contract tracks play/retry fees)

Match-3 (Match3Game)

How it works

• Start a session via startGame(level) (levels 1–10).
• You get 1 free play per 24 hours; otherwise you pay playFee (default 0.001 ether) to the treasury.
• Rewards are credited when the frontend calls completeLevel(sessionId, level) and levelRewards[level] is set to a non-zero value.

Boosters (paid, sent to treasury)

• Hammer: 0.0001 ETH (pack of 5: 0.0004 ETH)
• Shuffle: 0.0002 ETH (pack of 5: 0.0008 ETH)
• Color Bomb: 0.0003 ETH (pack of 5: 0.0012 ETH)

3-Card (CardGame)

How it works

• Play via playGame(selectedCard).
• You get 1 free play per 24 hours; otherwise you pay playFee (default 0.002 ether) to the treasury.
• If you win, the contract credits winReward (default 100 ether JOYB) to your claimable balance in the treasury.

Randomness note

The winning card is derived from on-chain entropy (block.prevrandao, timestamp, sender, session id). This is suitable for casual gameplay, but it is not VRF-grade randomness.

Daily Claim (DailyClaim)

How it works

• Claim via claimDaily() when canClaim() returns true (24h cooldown).
• Streak continues if you claim within 48 hours of your last claim; otherwise the streak resets to 1.
• Reward is baseReward + streakBonus × (streak - 1) (defaults: 100 JOYB base, 10 JOYB bonus).

Basebound (BaseboundGame)

Basebound is a side-scrolling hill-climb racer. The contract provides:

• 1 free play per 24 hours, otherwise playFee (default 0.001 ether).
• An optional retryGame() flow with retryFee (default 0.0005 ether).

Rewards and claiming

All JOYB rewards are credited into the Treasury contract as pending balances and must be claimed by the user (see Tokenomics).