Suveh Nux is not an ambitious game. Backstory and characterisation are minimal; it is quite short; and all of it takes place in a single, almost bare, room. In this room, the player has to solve a number of puzzles, all of which are based on a linguistic magic system. Figuring out this system is not too hard, though what you can do with it is sometimes less obvious. (I used the hints at one point, though I suppose I might have managed without if I had spent more time on the problem.)
Suveh Nux has a lot going for it. The implementation is impeccable and very polished, making the game a joy to play. The central puzzle is enjoyable, and the progressively harder tasks you are supposed to get done with the magic system are well thought-out. Therefore, I can readily recommend this game.
On the negative side, I can only say that the central puzzle is too easy: I would really have liked to see some more complex grammatical puzzles. Maybe an idea for an extended version?
This gives the game 4 out of 5 stars on an "unambitious IF" scale, which I translate to 3 out of 5 on the scale of all interactive fiction.