Spoilers ahead: for the puzzle and the movies/games
This page reveals all categories and answers for this puzzle. It also discusses plot details, story endings, and other spoilers for some of the movies/games shown.
easy
Phone or text-message interface games
A Normal Lost Phone · Simulacra · Sara Is Missing · Bury me, my Love
medium
Developed by The Chinese Room
Dear Esther · Amnesia: A Machine for Pigs · Everybody's Gone to the Rapture · Still Wakes the Deep
hard
The HUD comes from gear your character actually uses
Metroid Prime · Metro 2033 · Far Cry 2 · Star Wars: Republic Commando
Each game grounds player readouts in gear the character actually uses. The visor, watch, map, or helmet display is part of the fiction, so the HUD feels like equipment instead of a floating overlay.
tricky
Reboot titles that dropped the number
Hitman · Thief · Tomb Raider · Saints Row