How many boxes can be placed simultaneously in the game?
By default, up to 4 boxes can be placed at once. If space is insufficient, you can unlock temporary additional slots by spending 500 in-game currency or watching an ad. Each unlock allows up to 3 extra slots (meaning a maximum of 7 boxes can be placed simultaneously). These extra slots are valid only for the current level and will automatically reset to the initial 4 after completing the level.
Besides unlocking slots, what other uses does in-game currency have?
The core uses of in-game currency fall into two main scenarios: first, unlocking temporary additional box slots; second, purchasing and activating special skills (such as Sort, Clear, etc.).
Does the game only feature balls in four colors?
The game features more than just four colored balls. As you progress through the game, the difficulty gradually increases, and the color palette of the balls expands accordingly. Initially, only the four basic colors—red, pink, purple, and yellow—are available. As players advance through levels and complete challenges, additional colors like blue, green, and orange are unlocked. This not only enhances the visual experience but also deepens the strategic gameplay.