Ask 12 people the purpose of science fiction and you’ll get 13 different answers, but two likely agreed-upon definitions are ever-present in 28 Years Later. It’s an amusingly strange (and appropriately strange-looking) horror blockbuster that may as well take place in an alien world, despite feeling uncannily familiar. 28 Years Later reveals a world where a quarantined United Kingdom has been left to fend for itself. The old world, and the world outside Britain — where time has progressed normally, mostly ignoring the ending of 28 Weeks Later — may as well no longer exist, as 28 Years Later remains tethered to the norms of this new reality. Where 28 Days Later was shot on rough Mini-DV tape, their decades-later sequel employs numerous iPhone 15 Pro Max smartphones, either placed on drones or rigged up side by side.