Sure! Here's a sample game implemented as a single HTML file using JavaScript and enclosed in script tags. This game is a fast-paced platformer where the player controls a cube and guides it through different levels. The cube can jump, fly, and flip to avoid obstacles and reach the end of each level. Since visual elements were requested, I've included ASCII art to represent the cube and spikes.
You can copy the code below and paste it into an HTML file to play the game:
In this game, the cube character is represented by a white square, and the spikes are represented by ASCII art triangles ("▲"). The player can make the cube jump by pressing the Space key, and they can perform a flip by pressing the F key. The game will end if the cube collides with the spikes.
Please note that this is just a simple example to demonstrate the game mechanics and is not a complete production-ready game. You can enhance it by adding more levels, improving the graphics, adding power-ups, etc.