Retro Endless Runner Web Game Development

I'm looking to create a new endless runner web game with a retro theme. I have an existing game that I want to use as a reference, and I would like to create more games in the same vein. This project involves developing a web game that will be accessible on both desktop and mobile browsers.

Ideal Skills and Experience:
- Proficient in HTML5, JavaScript, and CSS
- Experience in game development, specifically endless runner genre
- Ability to create engaging, retro-themed graphics and sound
- Knowledge of responsive design for cross-platform compatibility
- Familiarity with game testing and optimization techniques.