Ark Reaver of RPG Revolution plays Dark Gaia's One Night.

Overview

First of all, I would like to say that yes, this game is actually scary!

The creator of this game has obviously put a lot of effort into the marketing of the game. Anyone who has read any forum topic involving this game would know the lavish attention to detail he used, and the overwhelming assertion that this truly is a new concept for RPG Maker VX and a truly scary tale. But did the clever marketing reflect the game's true nature?
Well, in a way, yes.

Introduction
One Night is a fairly simple game which will seem immediately familiar gameplay and story wise to anyone who has played a game of the horror genre before.
You know the deal: Take control of a character who's found himself in a scary situation, run around, avoid monsters, collect items, gather clues, and solve puzzles in order to escape, all the while getting a scare or two.
It's hardly original gameplay, but for an RPG Maker game, I think this game captures the feel of a horror game fairly well.

Story
In One Night, you play as an unnamed man (you name him yourself in game) who awakens with amnesia in the medical room of an apparently ruinous military type compound that, it would seem has been abandoned for centuries as the result of some unknown catastrophy.
You'll need to gather clues and discover who you are and what happened to make the complex the way it is in order to escape, and along the way you'll uncover quite a few genuine plot twists and a story that is actually quite different from normal horror fare. The story, while used mainly as a backdrop for all the scary fun, is competent and leaves you wanting to play more.

Graphics
The graphics in One Night are made of a strange combination of XP sized characters, the VX RTP, and some custom modernized tilesets. At first, the graphics look very odd and inconsistent due to this, but they do actually seem to come together, and besides, for atmosphere, the game is eternally tinted in darkness, so you don't often notice the little inconsistencies anyway.
The graphics aren't anything to right home about, but the place at least looks like a complex, and a surprisingly good job is done on presenting a look of ruin and abandonment in the locations.
The darkening and the flashlight effect are very good at creeping the player out and set you up for a few genuine scares.

Sound
One of the things Dark Gaia bragged about for this game was the inclusion of a custom soundtrack. This is not entirely true. While most of this game's tracks are custom, some are ripped from Resident Evil and Silent Hill. But, overall, there are about twelve tracks, with about ten being custom.
The sound effects are a mixture of default RPG Maker sounds and sounds ripped from Resident Evil.
The sound is actually a strong point in this game. The custom tracks especially are atmospheric and convey a sense of dread. Combine that with the gloomy visuals and they do fit the atmosphere very well. Even the ripped sounds are used in a good context and fit the situations they are used in. Overall, this has some of the best sound in an RPG Maker games. All music is of MP3 quality and not one midi is to be found.

Gameplay
The biggest test of all. Graphics and sound aside, is One Night actually a fun game to play?
I'm happy to say that, at least from my experience with it, yes it is. It's a fairly standard horror chase around, where you explore locations, find items and keys, solve puzzles and avoid enemies to get forward.
The bulk of the game is solving puzzles. These puzzles range from simply finding an item and using it in a certain situation to doing chemistry, math puzzles, or even crytpic riddles. Most of the puzzles are straightforward, though two or three are set out in a very vague way and require a lot of lateral thought to solve, and you may be stuck at them for up to half an hour at a time.
All the while, as you are conducting these puzzle solving actions, packs of monsters are constantly on your tail. The monsters must be avoided at all costs, because each time they catch you, you sustain a wound, and three wounds equals death. Luckily, though, there are some first aid kits to find which heal you and a few self defense items which can help you against the monsters.
There are also a few boss fights, though these are simple, and repetetive scripted events wherin you simply run around avoiding the boss's attacks for a predetermined time until a scripted event takes place.
Overall, the gameplay is fun and tense, if only really because of the scare value that lurks behind it all, but it does start to become a bit repetive after a while. The game isn't very long, and can be completed within three hours, but this is okay, because the gameplay is really only suitable for such short bursts. Plus, there is the ability to change the ending scene depending on which NPCs you let survive until the end, so some replayability exists also.

It's certainly not the best game out there, but I do reccomend horror nuts and thrill seekers alike to play this game.