Sure! Here's a simplified text-based version of a Five Nights at Freddy's game implemented as a single HTML file using JavaScript within script tags. Please note that this is a very basic implementation and does not include any graphics or pictograms:
Five Nights at Freddy's Game
To play the game, simply open the HTML file in a browser, and the game will start automatically. The game logic simulates nights of increased difficulty, decreasing power levels, and random animatronic movements. The game will end if the power runs out or if you reach night 5 and the animatronics catch you.