Hydra console dev kit

Start 'em young:

This, my friends, is meccano for budding game nerds:

For beginner to intermediate coders, you need only a minimum of programming experience in any BASIC or C-like language. You get all of the hardware and software you need including the Hydra console, comprehensive programming guide, keyboard, mouse, gamepad and your own cartridge to store your games on.

It's not cheap, at $200, but it's a grow-your-own-crystals game making set: you shell out for the convenience. Luvverly.