This string refers to of the independent game EVIL 2 , which is currently an ongoing development project.
The title typically appears on platforms hosting adult-themed or indie visual novels and adventure games (such as Itch.io or Patreon ), where developers release incremental "point" updates (like 0.64) to add new story chapters, art assets, or gameplay mechanics while the game is still in production. EVIL 2 [Ongoing] - Version: 0.64