Unofficial Tex Murphy

Plenty of action, role-playing, and survival horror games have that already. But for adventure games, that is more like an exception; the norm is still point-and-click interface with restricted viewpoint and movement.

To qualify as having "first-person freedom of movement", the player's viewpoint must be seen from a first-person perspective, and the movement must not be scripted, pre-rendered, or presented as "slideshows" (as in Myst) - in other words, the player must have complete control as to when and where to move in a 3D virtual environment. So here is a short list I can think of. Anyone know of more?

Under a Killing Moon (1994)
The Pandora Directive (1996)
- These two lack advanced keyboard controls (e.g. no WASD keys).

Overseer (1998)
- One of the first adventure games with hardware acceleration for graphics.

Gabriel Knight 3: Blood of the Sacred, Blood of the Damned (1999)
- Has interesting mix of 1st and 3rd person view.
- gameplay video

3 games in the Myst series has it:
realMyst (2000)
Uru: Ages Beyond Myst (2003)
Myst V: End of Ages (2005)

The Starry Expanse (in development)
- Fan-made remake of Riven with first-person freedom of movement.
- Official site.

Frogwares has made several Sherlock Holmes games that can be played in both 1st (with freedom of movement) and 3rd-person perspective. The latest and upcoming "Crimes and Punishments" will use Unreal 3 engine, which promises new heights in graphics quality for an adventure game:
Sherlock Holmes: The Awakened (2006)
Sherlock Holmes versus Arsène Lupin (aka. Sherlock Holmes: Nemesis, 2008)
Sherlock Holmes versus Jack the Ripper (2009)
The Testament of Sherlock Holmes (2012)
Sherlock Holmes: Crimes and Punishments (upcoming, 2014).

Darkness Within 2: The Dark Lineage (2010)
- gameplay video
- playable demo

Dear Esther (2012)
- gameplay video

Gone Home (2013)
- This is an immensely acclaimed (but also very short) independent game about a deserted home filled with bittersweet memories of the missing family.
- gameplay video

Normality (1996)
The engine was later adapted into a first person shooter game called Realms of the Haunting.

Maybe this one, if i get it ready some time

There are earlier games too. Incentive Software put out a whole bunch of them in the '80s, like Castle Master and Total Eclipse. Blocky polygons and slow framerates, but they were pretty cool for the time.
http://www.youtube.com/watch?v=N-Xh3bd9TZ0

I remember just for "Realms of the Haunting", it was quite good adventure with dark atmosphere.
I bought it on GOG few months ago, but did not have a time to play it again.

Normality was great game, but some of the tasks were non logic.

Paulino wrote:Normality was great game, but some of the tasks were non logic.

Yeah, I love Normality's quirky humour but the inventory puzzles definitely should not of been as wacky as the characters.