" Crimson High " is an adult-themed visual novel developed by VertigoAVN . As of April 2026, the game has progressed significantly past version 0.21.1, with recent updates reaching version 0.39.0.
Released as part of the "Second Year" update cycle, version 0.21.1 introduced several key features: Crimson High [v0.21.1]
: Interactions with characters like Miko , Aki , and Mariko determine their affection levels (e.g., MikoL++ ), which can lead to divergent story paths or romantic encounters. " Crimson High " is an adult-themed visual
: Five new high-quality animations and various CG galleries. : Five new high-quality animations and various CG galleries
: Players engage in point-and-click investigation segments to search for evidence and discover "Easter eggs" hidden within the game environment. 3. Version 0.21.1 Content
: Contactable via messages that allow for "playful" or "neutral" responses.
: Version 0.21.1 utilizes a system that tracks player choices across roughly 29 critical story points. These choices impact character dialogues, unlock specific cutscenes, and influence relationship variables.