Slope

"Slope" is indeed an addictive 3D running game that challenges players to control a ball rolling down a steep slope. The game's mechanics are straightforward, but the difficulty lies in the speed and the unpredictable nature of the track. As you've described, the controls are simple:

• LEFT ARROW: Move the ball left
• RIGHT ARROW: Move the ball right

The objective is to avoid obstacles, keep the ball on the track, and go as far as possible to achieve a high score. The game's endless nature means that there is no definitive end to the course, which keeps players striving to beat their or others' high scores.

Game features like the neon aesthetic and the dynamic changes in the course layout contribute to a visually stimulating experience that can be both intense and exhilarating. This makes "Slope" not only a test of reflexes but also of concentration and consistency.

Given that it's built with Unity 3D and available in web browsers, "Slope" is easily accessible for anyone who wants to play a quick game without committing to a lengthy download or installation process. The availability of a full-screen mode and leaderboard adds to the competitive edge of the game, encouraging players to improve their skills and climb the ranks.

Rob Kay, the developer, having a background in designing popular rhythm games like "Guitar Hero" and "Rock Band," suggests an emphasis on the rhythmic and fast-paced aspects of gameplay which seem to be present in "Slope" as well.

For those interested in playing "Slope," the instructions are indeed very simple:

1. Navigate to the game's webpage or download the app if you're on a mobile device.
2. Use the left and right arrow keys to steer the ball.
3. Avoid obstacles and try not to fall off the edge.
4. The longer you survive, the higher your score will be.
5. Compete for high scores and positions on the leaderboard.

The game's addictiveness comes from the instantaneous reactions required to navigate the course, coupled with the satisfaction of achieving a new high score. Whether you're looking for a casual game to pass the time or a competitive challenge, "Slope" offers a dynamic and engaging experience.