Welcome to Calculate24, with the primary goal of manipulating four integers through addition, subtraction, multiplication, and make the 3rd arithmetic result = 24. Let's delve into the features of Calculate24:

1. Varied Gameplay Modes:
Calculate24 offers users the flexibility to choose from three distinct gameplay modes, catering to different skill levels and preferences. These modes include:
- Simple Mode: Simple mathematical operations.
- Challenging Mode: Designed for seasoned players seeking a more rigorous mental workout.
- Endless Mode: Test your endurance with a continuous stream of puzzles. You can choose the option to win by accumulating five levels, or you can choose the option to win by accumulating 10 levels. There are also 20 and 50, with a maximum of 100.

2. Multiple Levels of Difficulty:
Both Simple and Challenging Modes consist of eight progressively challenging levels. In Endless Mode, the difficulty ramps up continuously as you progress through the levels.

3. Unlockable Levels:
To access subsequent levels in Simple and Challenging Modes, users must successfully complete the preceding level. This adds an element of achievement and progression to the gameplay experience.

4. Interactive Gameplay Interface:
The gameplay interface of Calculate24 is intuitive and user-friendly. Users are presented with four numerical values and a set of arithmetic operation buttons, allowing them to combine the numbers creatively to achieve the target sum of 24.
We provide only 4 numbers, but the result of first 2 calculate is also can use in 3rd arithmetic.