The player needs to assist Jack, who owes a huge loan, in repaying the loan within one year.

Gameplay and mechanism:

The game lasts for 12 months, with 8 rounds per month. Players randomly select 25 items from their backpacks in each round to earn coins, and adjacent items may have a combo effect. Players maximize the amount of coins in each round by building their own backpacks.

After one round, the player selects one of the three items they want to add to their backpack. In the eighth round of loan repayment, if unable to repay the game, it will fail. After repayment, choose one of the three item bonuses to add to the backpack, and these bonus effects will always exist in this game.

Subsequent development:

1. Achievement system and talent tree: Players unlock achievements to obtain talent points, and select talents through talent points to enhance the effects of items.

2. Advanced system: Unlock higher difficulty levels after completing the level.

3. Essence Points: Players use essence points to disable certain items and props, reducing the randomness of the game through essence points.

4. Fragmented plot collection system