An in-universe ad for Sunset Sarsaparilla from Fallout: New Vegas. Left is the original poster, and right is the faded, 200-year-old remnant.

This is an ad for a fictional brand that appears in Fallout: New Vegas. Its purpose in the video game is for atmosphere—to create a sense of what the world was like before the Great War of 2077. That purpose has little to do with the concept of flow, however, so instead I will focus on the poster’s in-universe purpose: to sell sarsaparilla. The poster flows in a sort of Z shape, starting with the bodybuilder and moving to the upper right corner, then down to the left and across the brand name at the bottom.

The focal point of the image is the bodybuilder, but the barbell and the right arm point up and to the right, leading the eye up toward the bottle he’s holding. The stripes on his shirt reinforce this, as does the bodybuilder’s orientation. Once the eye is on the bottle, the words “Build Mass with SASS!” are very close, making them the next thing the reader looks at. From the words, the bodybuilder’s head and neckline point down and to the left, toward the brand name at the bottom. The ad starts with the recognizable bottle, continues with a slogan and picture that entice the reader to buy the product, and ends with the brand name, ensuring that the name Sunset Sarsaparilla sticks in the reader’s mind, making them more likely to buy the drink.