As an AI text-based model, I cannot directly create interactive games or HTML files. However, I can provide you with an outline of how you can create a simple text-based game using JavaScript. You can then use this as a starting point to build upon and create your own customized game.
Here's a simple example of how you can create a text-based game using JavaScript:
This is a basic HTML file that includes a JavaScript section enclosed in `
` tags. The game starts with a welcome message, asks for the player's name using a prompt, and displays a personalized greeting.
To create a more advanced game resembling Splatoon, you would need to incorporate graphics, implement player movement, shooting mechanics, and various interactions. However, building a full Splatoon-like game is a complex task that goes beyond the scope of a single response.
To create an "ID" so you can play on Switch, you would need to develop a complete game using specialized game development tools and frameworks compatible with the Nintendo Switch platform.
I would recommend starting with learning JavaScript game development frameworks like Phaser (https://phaser.io/) or Unity (https://unity.com/). These frameworks provide game development tools and platforms to create games compatible with various devices, including smartphones and consoles like the Nintendo Switch.
Please note that creating complex games requires advanced programming and game development skills, as well as familiarity with the target platform's development processes and guidelines.