+ & - : A Zen game 2.3

This game challenges players to think strategically rather than rely on random gestures. Unlike conventional sliding puzzle games, +&- requires careful calculation and planning to achieve high scores.

The gameplay is governed by two simple rules:

• Adding equal numbers placed on backgrounds of the same color
• Subtracting different numbers on backgrounds of differing colors

Players interact by tapping on two numbers; the selected number is replaced with the result of their addition or subtraction, depending on the background colors. The objective is to maximize the total score through thoughtful moves.

Additional features include:

• The ability to save the current game state and start new sessions, enabling up to nine simultaneous games for flexible play.
• Upon surpassing 500 points, players gain the option to swap numbers between two quartets of different colors by dragging one over the other.
• Extensive customization options for the game interface, with 351 different color combinations for the game board.
• The user interface can also be tailored to light or dark themes to suit player preferences.