From author's description: "Chalk is all about drawing your way to all the glory! Draw lines across shapes to destroy them, turn back bullets at enemies and thwart huge boss enemies by bouncing stuff back in their faces!
It's an arcade-game sized outing with the simple approach of a chalkboard. Because, you know, chalkboards are simpler than pen and paper...? Download it for some different arcade fun!"
Mr. Peckerston has a video playthrough on YouTube which shows him achieve an S-Rank on every level: