HL2 tangent - Having only just completed it, it didn't wow me, but then it's about 13 years old, so I can't possibly judge it fairly. I can see why it was great at the time, but having said that, Halo is 3 years older, and while they're two slightly different types of FPS, HL2 now doesn't strike as being 3 years 'better' than Halo. But what HL2 has going for it, even to this day, IMO, is its pacing (even though I found out a bit too long in the middle section), its sound design, its blending of traditional FPS with puzzle-based advancement, and general gravity gun fun. And without holding the player's hand, the difficulty level (on Normal) allowed me to enjoy romping through the game but having to give a bit more thought to some of the set-piece battles, but without frustrating me. Perhaps it's because I've not played an FPS for a while, but I was able to play from Ravenholm to the end credits in two sittings in my first playthrough, so I must have found the gameplay reasonably compelling, because I don't often manage that kind of progress. The story itself? Passed me by mostly so that doesn't come into my considerations much. Alyx was fit though, which was an undoubted motivation.