I recommend this game to anyone who enjoys puzzles, and has a herculean tolerance for frustration.
I'm not the former, but actually the latter who happens to be good at puzzles though I don't actually like them.
Even so, the story kept me intrigued and rather absorbed into the game.
It had me addicted to the point that I forced myself to get a 100% completion, meaning I finished all the possible game over/endings, and even got all the secret passwords on hard mode.
Somebody is gonna luck out if they rent it, and get my copy. xD
Though technically a sequel of the DS game, 999, Virtue's Last Reward stands on its own merits as an adventure/visual novel game.
The story is wonderfully dark sci-fi adventure, which puts you in the role of a character imprisoned in a factory filled with puzzles that you'll either have to solve or die trying. The depth of the characters and the way that the story's twists and turns lead up to a grand finale is just amazing. It stands on its own merits as a visual novel, let alone as a game.
As a game, though, there is more to the title than story. Large portions are made up of puzzle rooms, in which you and other characters must solve in order to open a chest with a cardkey. Puzzles often have you looking in all areas, going over every tiny hint. If you're on an easier mode, other characters may make additional comments or clarify an important aspect of the puzzle. This can be shut off by playing in a harder mode, but if you're new to adventure games it is probably a good place to start.
Aside from the physical puzzle rooms, there are booths that you'll enter and have to make a very important choice. You'll either choose to betray an friend who helped you escape the room, or you'll choose to ally with that friend. Your choice here determines both you and your opponent's fate.
Once a choice is made, you may end up revisiting old timelines and making knew choices. The game has so many specific bits of story that you'll end up travelling to the some of the same bits of time more than once. Essentially, the game becomes about moving back and forth in time in order to get the best possible or 'true' ending.
Playing over and over to find the 'true ending' is fun, and adds a lot of replay/value to this game. It isn't something you'll play for only a couple hours.
Overall, this game is a real gem due to it's fascinating story and characters. It stands on its own merits, but also adds a new perspective to the story line of its predecessor, 999. Just a gr