There was a fair degree of anticipation surrounding “FixPix” a few weeks ago before it launched at the App Store. Delicious Toys posted a video of an early version in action, and viewers sat transfixed by the retro appeal of its artwork. It’s a throwback to 1980s Atari, Nintendo and Commodore 64 aesthetics, when video game artists had to make due with a technically limited palette and form their own sort of boxy impressionism. “FixPix” is technically a puzzle game in which the puzzle part definitely takes a back seat to the art.