The trailer above is for The Nonary games, an updated collection of the this game and its sequel. It does not contain the third game.
Details: I played the DS version, which did not have voice acting or any of the modern changes that were included in the updated versions. It takes about ten hours to get through this game according to howlongtobeat.com More information can be found at https://www.spike-chunsoft.com/games/zero-escape-nonary-games/
The thing about visual novels is that the entire value of the game relies on how interesting the story is. There is little gameplay so a lousy story will equal a lousy game. Unfortunately, the story here is not presented in a good way and takes pleasure in wasting players’ time. The lack of voice acting also didn’t help.