[Jonathan Cauldwell] has come up with just such a tool that lets you do just that, for a variety of 8-bit platforms. [Jonathan]’s project is called the Multi Platform Arcade Game Designer ...

The SPEBEG is a simple 8-bit game where you aim with the joystick at the target and fire to gain points. As your score increases, so does the game speed. It doesn’t need a single line of code ...