Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem.
This review may contain spoilers
Absolutely fantastic! For a short mod it really packs a punch! The incredible design of the levels really makes good entertainment. I used a walkthrough because the puzzles can really be hard. Great gameplay and good use of physics.Mr.Whirly was the best vehicle ever! The Antlion guard arena was fun! And the final battle against a strider was very well invented! Though a few problems with the barnacles happened i had to retry all the time. Because it uses so much good work i give it 10/10