It is a ball with gravity inside of a room that has walls with collision so the ball cannot get out and you can press a button to add another ball with gravity, and there is also a button that lets you delete a ball and you can make as many balls as you want's game

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No:31815

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It is a ball with gravity inside of a room that ha..ALL
Developer User15232｜Date and time 23/12/28 11:47:39
Build time 24.762 sec｜Game capacity 3.067KB｜

Script

Sure, here's a simple implementation of the game you described:

Save the above code in a file with the `.html` extension and open it in a web browser on your smartphone. You'll see a room with a border, and two buttons at the bottom to add or delete balls. Clicking the "Add ball" button will create a new ball inside the room, which will experience gravity and bounce off the walls of the room. Clicking the "Delete ball" button will remove the most recently added ball from the room. You can click the "Add ball" button multiple times to create as many balls as you want. Note: This implementation uses the `requestAnimationFrame` method for smooth animation and better performance.

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[PR]現在の欲しいゲームランキング

Click here for free DL of the app version that can save data.

Sure, here's a simple implementation of the game you described:

```html
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Ball Game</title>
    <style>
        #room {
            position: relative;
            width: 400px;
            height: 600px;
            border: 1px solid black;
            margin: 20px auto;
            overflow: hidden;
        }

.ball {
            position: absolute;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: red;
        }

#addBtn, #deleteBtn {
            margin: 10px;
            padding: 5px;
        }
    </style>
</head>
<body>
    <div id="room"></div>
    <button id="addBtn">Add ball</button>
    <button id="deleteBtn">Delete ball</button>

var balls = [];

function createBall() {
            var ball = document.createElement("div");
            ball.className = "ball";
            room.appendChild(ball);
            balls.push(ball);

// Set initial position
            ball.style.left = Math.floor(Math.random() * (room.offsetWidth - ball.offsetWidth)) + "px";
            ball.style.top = Math.floor(Math.random() * (room.offsetHeight - ball.offsetHeight)) + "px";

// Apply gravity
            var velocityY = 0;
            var gravity = 1;

function updatePosition() {
                var ballRect = ball.getBoundingClientRect();

// Check collision with walls
                if (ballRect.top <= 0 || ballRect.bottom >= room.offsetHeight) {
                    velocityY *= -0.8; // Bounce off walls
                }

// Apply gravity
                velocityY += gravity;

// Update position
                ball.style.top = ball.offsetTop + velocityY + "px";

requestAnimationFrame(updatePosition);
            }

updatePosition();
        }

function deleteBall() {
            if (balls.length > 0) {
                var ball = balls.pop();
                room.removeChild(ball);
            }
        }

addBtn.addEventListener("click", createBall);
        deleteBtn.addEventListener("click", deleteBall);
    </script>
</body>
</html>
```

Save the above code in a file with the `.html` extension and open it in a web browser on your smartphone. You'll see a room with a border, and two buttons at the bottom to add or delete balls.

Clicking the "Add ball" button will create a new ball inside the room, which will experience gravity and bounce off the walls of the room.

Clicking the "Delete ball" button will remove the most recently added ball from the room.

You can click the "Add ball" button multiple times to create as many balls as you want.

Note: This implementation uses the `requestAnimationFrame` method for smooth animation and better performance.