Dark City: Vienna by Friendly Fox Studio is an adventure game that is sure to challenge mystery enthusiasts with its hidden object puzzles, mini-games, and brain teasers. The game is set in an opera house in Vienna where a masked assailant is causing havoc. As a player, you must investigate the incident and reveal the secrets of the theater to unmask the malevolent entity before it's too late.

The game features 40+ stunning locations with spectacular graphics that will immerse you in the adventure. You will engage your sense of observation to find all hidden objects and navigate through mini-games, puzzles, and brain teasers to solve remarkable mysteries. Additionally, the game has a bonus chapter where you can help find a mysterious muse and complete the detective story.

Dark City: Vienna also offers a collection of bonuses, including an integrated strategy guide to avoid getting lost, collectibles, and morphing objects to unlock special bonuses, and achievements that will test your skills.

Overall, Dark City: Vienna is an enjoyable game for adventure seekers. It is available for free on Android, and you can try a few scenes before unlocking the full adventure in the game.