Sure, I can create a simple game with the elements you mentioned. Here's an example of an HTML file that incorporates JavaScript to create a game-like experience:
SO COOL
This HTML file creates a game-like experience with flashing background, rainbow text, bouncing balls, and the appearance of red cubes with a shaking effect every 2 seconds. The background color flashes between white and black, the text "SO COOL" changes its color randomly every second, the balls bounce around the screen, and red cubes appear and shake for a brief duration before they disappear.