Pillar is a fascinating set of mini-games, surrounded in a beautiful package of art and music. However only half of the content is worth playing, with the other half unremarkable or frustrating. Pillar is worth a purchase on sale for the art style and interesting concept.
Newcomers to Saints Row IV will love the story, gameplay and customisation, as they still stand strong from the original iteration, however a complete absence of new content will leave previous owners of Saints Row IV reluctant to purchase again. I did find the game to be an unstable, crash-prone experience, so keep that in mind if you choose to purchase.
Although short, Gat Out of Hell's story is great, and makes for an enjoyable experience with its unique flying mechanics and setting. Fans of the franchise will love this, however newcomers may feel let down by its lack of real narrative.