Gyakuten Saiban 4 (Japan) (Rev 1), 逆転裁判 4 (ジャパン) (リヴィジョン1), is a legal simulation game released for the Nintendo DS platform in Japan. Developed and published by Capcom, the game is part of the popular Ace Attorney (Gyakuten Saiban) series. In the game, players take on the role of Phoenix Wright, an attorney who must defend his clients in court. Players must investigate crime scenes, gather evidence, and cross-examine witnesses in order to prove their client’s innocence. The game features a variety of puzzles and mini-games to keep players engaged. The game also features a new system called “Psyche-Locks”, which allows players to uncover the truth from the witness’s innermost thoughts. With its engaging story and puzzles, Gyakuten Saiban 4 (Japan) (Rev 1) is a must-play for any fan of the Ace Attorney series.