Review for RPG Maker Web's IGMC 2017 Secret Santa! ...Sort of, I'm just reciprocating because readydotexe reviewed my game. ;)
Event Horizon Murder Case is a highly story-driven game. The player does not move around at their own will at all; the only interaction is multiple-choice decisions, although some of those involve a loop of choices until the player figures out the correct answer (and enough blunders will cause a game-over). As has been noted in comments on the main game page, the play style is highly reminiscent of the Ace Attorney series.
In terms of production values, Event Horizon Murder Case features original graphics and music. I found the art style a little off-putting, especially the map tiles and sprites, but that's a subjective matter. I liked the character illustrations a little better, and that's what you'll spend most of your time looking at, as the game is primarily a series of conversations.
The story is intriguing and well thought-out. It not only keeps you guessing as to the murder mystery, it brings up questions about artificial intelligence and how it should be handled. The grammar has some obvious problems, but for the most part it's readily intelligible to a native English speaker, and I'd guess it's better than most English-speakers would do in trying to write a game in some other language.
For improvements in a future version, I would recommend some way of reviewing notes about important information that has been given, as details like when certain things occurred are crucial and not easy to remember from previous conversation. I also think some less intense music would be good for most of the interrogation sequences. Despite issues, Event Horizon Murder Case is good enough to get my up-vote.