A picture is worth a thousand words:

Well OK, maybe not this picture how about a download link ?

I’m quite happy with the results.

• engine up and running and very small (< 1000 lines of code)
• used programmatic vector graphics and  “imported” pixel graphics
• added sound support for looping background music as well as one shot sound effects and “imported” sounds
• basic input, collision detection, win/lose condition checking done
• main menu screens, win screen works.
• levels can be designed in text editor

This can support quite a few genres: shoot’em ups, platformers, maze explorers, and puzzle’s come to mind

It’s worth repeating how much difference the Kaitila book made on my preparation and perspective on LD.