Valve boss Gabe Newell has revealed the studio feels its Half-Life series needs to get back to "scaring" players.
Newell told Edge Issue 213 that the series also had to broaden its "emotional palette".
When asked if the Half-Life series deliberately matured with its audience as part of a special look at the franchise, Newell replied:
"That isn't something we think about except as part of each project needing to respect the fact that simply repeating the past isn't going to have the same impact now as it did then.
"I feel like we've gotten away from genuinely scaring the player more than I'd like, and it's something we need to think about, in addition to broadening the emotional palette we can draw on."
Although Newell didn't mention Half-Life Episode 3 by name, the prospect of a more frightening instalment will be sure to excite fans - and Newell reckons he knows the deepest fear of the series' core fans.
When Edge asked what scares them the most, he had a particularly dark answer: "The death of their children. The fading of their own abilities."
You can read the full feature in issue 213 of Edge, which is in store now. Buy your copy of Edge and have it delivered to your door.