Research and Development

About Research and Development

Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem. The game does not have an overt story; the player wakes up as an unnamed character in a detailed but generic location, not knowing how they got there, and must start solving puzzles in order to escape.

Developer

Marcello Bortolino

Genres

Shooter

9,574 games

Puzzle

9,833 games

Platforms

Windows

68,709 games

Releases

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Frequently asked questions

Where can I buy a Research and Development key?

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Can I play Research and Development immediately after the purchase?

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