There are many similar collect 'em all platformers like this on Speccy, but I like the idea. Maybe adding something to the gameplay to make it more interesting like temporary invincibility etc would be a nice idea.
EDIT: I didn't know that full version was released. It's really cool. I love the pixel art,animated flies and the music. Responsive controls, so much better than Jet Set Willy. And the title picture is beautiful.