RPG Maker VX is an odd duck. In many ways, it seems pointless compared to it's more advanced successor VX Ace, and in some ways is a step back from RPG Maker XP. Regardless, it is available both from the official developers and on Steam, and it still has some utility for game design.

RPG Maker VX is a top-down, 2D RPG game creation engine. It uses an older variant of the Ruby code from VX Ace, and in many ways feels like a stripped-down "lite" version of VX Ace. It lacks many features from VX Ace like multiple tilesets and the database options are far simpler for tweaking characters and other items in the game.

Graphically, it has a similar set of stock resources as VX Ace, except with some minor variations, and the art style of the graphics lends itself towards a rougher cartoony style for the enemy graphics especially compared to VX Ace. Since you are limited to a single tileset, options are far more limited for adding new content, so in this regard, VX has much less to offer for designers unless they replace the stock tileset with a different one. Most other elements like character sprites have the super-deformed look as in VX Ace, and many other resources are quite similar to those VX Ace would also use later.

Sound in VX defaults to MIDI, albeit high-quality midi appropriate for a high fantasy game, though like VX Ace has support for MP3 and OGG. Sound effects are also in the same vein.

The controls in VX are nigh identical to VX Ace, being mouse and keyboard-driven, primarily the former. Stability is quite good and while this program is intended for Microsoft Windows, it can run quite well in Wine/Proton on Linux. There is an option to extend the game with custom scripting, but options made by fans tend to be more limited than for other versions of RPG Maker.

Morally, it's much like VX Ace.

The violence of the turn-based RPG style is possible if you have combat in your created game. Language is absent unless you choose to add profanity or crude slurs and epithets. The female enemy battlers have some cleavage showing at worst but are otherwise fairly tame, but can be ignored if you don't intend to use them.

There are some magic circle graphics (in a hexagram pattern) included by default, should you wish to use them for the atmosphere, but this is not required. Games can be as family-friendly or adult as you design them, so ethical content is entirely up to the creator in terms of how appropriate.

In essence, this is a stripped-down RPG Maker VX Ace. While not worthwhile on its own, it's still worth getting because RPG Maker resources made ONLY for VX can not be used with other RPG Makers unless you own VX, and since they are perfectly compatible with VX Ace, buying VX is like buying a license to use more fan-created resources than you could before, which I recommend to any RPG Maker fan.

If possible, I'd get this on sale or as part of something like a Humble Bundle, it's not recommended for use strictly on its own when much better options are available. Regardless, it is still technically sound and worth acquiring if only for the resource licensing benefits, and morally any games made with it are essentially up to you to decide.