Ever 17: The Out of Infinity is a visual novel video game developed by KID. It is the second entry in the Infinity series; it is preceded by Never 7: The End of Infinity, and followed by Remember 11: The Age of Infinity, 12Riven: The Psi-Climinal of Integral, and Code_18.
From VNDB:
"Ever17 is the tale of seven individuals who come to be trapped 153 feet within the underwater marine theme park, LeMU. During an apparently normal day at the park, a massive accident happens, placing almost half of the facility underwater. The path to the surface and the communication lines are cut off. In addition, LeMU is under constant assault by severe water pressure, limiting time to find a means of escape to 119 hours. Escape is not the only concern, however; many questions arise as to the legitimacy of the accident and whether or not those trapped there were brought there for a purpose."
If you’re after a game with unique gameplay and a very definite visual style then Minon: Everyday Hero will fit the bill perfectly. An original action-platform game created by Japanese developers Success, Minon: Everyday Hero gives to the player the challenge of helping the local townsfolk who are in trouble.
Psyvariar Delta is a classic shooter known for the Buzz System, where players level up by grazing enemy fire and chaining Buzz. Also included in this version are 2 HD remakes of the arcade classic Psyvariar Medium Unit and Psyvariar Revision with new additional features.
Umihara Kawase is an action game series where the player controls protagonist Umihara Kawase to reach the end of each level. The game is highlighted by its rubber ring action in which the player uses an elastic rope to progress.