Soooo... the term "Full Length" is completely unspecific. Per the examples you provided "Tetris" would not be considered a "Full Length" game.
I think any answer I provide is going to disappoint if based on that criteria.
How about this...
+ Are there games you would recommend that...
1) Have more than 1 hour of game play.
2) Have replay-ability.
3) Do not feel like an unpolished demo / VR experiment.
If we go with that, then here is what I've got...
-- Rec Room. (an absolute must for VR and completely FREE!)
-- Arizona Sunshine (I don't fully recommend, because it wasn't fun IMO, but great if you have a friend to play with.)
-- Star Trek VR (you will need 2-3 VR friends who haven't played it, and you'll get about 8 -16 hours of gameplay before you get bored. Note, I haven't tried the new DLC.)
-- Resident Evil. (Triple-A title... I put my friends in it, and they liked it.. but my carpet smells of "fear" now.)
-- Peirhead Arcade. (A cute VR recreation of a beach arcade. All mini-games in a sense, but well polished for an early indie game, and I enjoyed it.)
Note:
There are some games that do meet the criteria, but I don't fully recommend as MUST BUYS! (or 20% Buys)
Also.. going on Steam and sorting by Highest Review in VR gives you the best list of games to play. (note: that list excludes Rec Room cause it is FREE!)