At GDC 2010, iPhone developer 99games showed us what they have been working on as their next major iPhone title. The Jim and Frank Mysteries – The Blood River Files is an adventure puzzler in the vein of the Professor Layton game series.

In the Jim and Frank Mysteries, players assume the role of Jim and Frank who uncover a mystery left by their grandfather. As they follow the story and clues, they start to unravel the mysteries and must solve the various puzzles along the way. The game is an original iPhone title with 60 puzzles and an estimated 20-30 hours of gameplay.

The game is story-driven with 60 puzzles, 4 chapters, 8 mini games and 27 different characters. The puzzles are designed with the iPhone in mind and take advantage of iPhone specific inputs such as touch and tilt.

A hint system is also included so you can get help along the way. Here’s a few screenshots of some of the in-game puzzles.

The Jim and Frank Mysteries is due in late April, early May.

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The adventure sequel, entitled Secrets of The Mysterious Island, picks up immediately after Mina has unlocked the island’s secrets with the help of Captain Nemo’s ghost, and neutralised the magnetic shield that hides the mysterious island.

But a volcanic eruption causes her rescue helicopter to crash on the beach, Mina’s continued adventure takes an environmental turn as she realises it’s the island that needs protecting from our polluted world, and must reactivate the magnetic shield to protect this dangerous paradise.

Secrets of The Mysterious Island will weigh in at a Myst-sized 700MB, thanks to the epic girth of the game itself, it’s incredible visuals and atmospheric audio accompaniment. It’ll also pack in a few iPhone 3GS-specific features, such as using the digital compass and allowing you to move the device in 360 degrees to look around the island.

The final version will be available in five languages (English, German, French, Spanish and Italian) and should be landing on the App Store beaches ‘within weeks’, priced at £4.99 (or $6.99). In the meantime, check out the two Secrets of The Mysterious Island trailers below.

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The game follows the story of a robot who boots up into a mysteriously ruined mansion and has to figure out what happened. In his quest he must find out what happened to the inventor and must figure out who all these mysterious characters are and what they have to do with this broken down mansion. There are a ton of traps and puzzles that take some thinking to get through and slowly unveil the story.

The humor in the game is great and the puzzles are well thought out. But the game ended up being a bit too short to truly enjoy it it and once the problem has been solved, there is really no replay value. So at the current price it really is a tossup but the game itself was pretty addicting for the time I did have to play it. Check it out.

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