Calculate24 is where users solve numerical puzzles by combining four numbers using basic arithmetic operations to reach a total of 24.

Key Features:
1. Gameplay Modes:
• Simple Mode: Basic arithmetic challenges.
• Challenging Mode: Higher difficulty for experienced players.
• Endless Mode: Continuous play with win options at 5, 10, 20, 50, or 100 levels.
2. Difficulty Levels:
• Simple and Challenging Modes include 8 levels each.
• Endless Mode increases in difficulty as players advance.
3. Level Progression:
• Players must complete each level to unlock the next in Simple and Challenging Modes.
4. User Interface:
• Players are given four numbers and operation buttons to create a result of 24.
5. Feedback System:
• Success triggers a congratulatory popup.
• Failure prompts a retry message.