These games also tend to be cheaper than full retail releases as well. (engagedfamilygaming.com)
They're really going all out with this post-apocalyptic arcade title, packing more content into it than most full retail releases. (bloody-disgusting.com)
A story mode would've also helped in terms of longevity, but probably meant a jump up to full retail release rather than download only. (nextgengamingblog.com)