Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem.

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28 comments by Varsity on Jul 20th, 2009

PC gaming super-blog Rock, Paper, Shotgun loves R&D! In a new review Alec Meer praises the mod as "a seismic shift" away from the norm, telling readers that it is "as must-play as an HL2 mod gets":

R&D’s hook is that it’s essentially non-combative. Yep – you go without guns throughout (bar the ol’ Gravity jobbie, but hey, that’s more about construction than destruction here). Sure, you can tell an Antlion to claw someone to death or arrange to squash men with falling girders, but you’re definitely not Edward Pistolhands. It’s an environmental adventure game, taking the irregular physics and logic puzzles seen in HL2 itself and turning them into the game itself. Mazes, gravity, exploding microwaves and fire-retardant antlion carapaces all make an appearance – it’s very much a point’n’click adventure in an FPS engine.

If you still haven't played Research and Development, which requires Episode Two, download it now!

Update: Destructoid also has a very positive review.

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Research and Development (installer)

Research and Development (installer)

Jul 18, 2009 Full Version 52 comments

Updated 17 July 2009, fixed several issues & added a dynamic crosshair when using the keypads & lab buttons. Requires Episode Two.

Research and Development

Research and Development

Jul 17, 2009 Full Version 29 comments

Updated 17 July 2009, fixed several issues & added a dynamic crosshair when using the keypads & lab buttons. Requires Episode Two.

Post comment Comments  (60 - 70 of 746)
donutturtel Sep 19 2011, 8:56am says:

seen this mod before on youtube looked good hope it is :D

+2 votes     reply to comment
DragonHead Aug 15 2011, 5:43pm says:

Fun, very fun mod. I saw this mod from some Youtube videos, and had to try it out. I wish I played it before.
I wonder how many people tried to recreate that vehicle in Gmod.


+6 votes     reply to comment
logzlo Aug 9 2011, 10:06am says:

sir, I must congratulate you. this mod---no, this GAME was the best one I've played in a while. though I found a few of the puzzles to be too easy, they were all excellent, and the payoff is magnificent. my only two gripes:1. the zombie torso at the very end has no headcrab, and 2.there WAS a very end.

+4 votes     reply to comment
Onemaster Jul 25 2011, 2:17pm says:

Seems very cool, gonna download soon!

+2 votes     reply to comment
Shadowbyte Jul 24 2011, 1:20am says:

i wont lie, this is one of the best made mods ive ever seen valve could learn something from you and they need people like you too

+6 votes     reply to comment
sasasa Jul 1 2011, 11:15am says:

Guys, i need help, when i tried to exit the "Custom" awesome cart, i could not move, i could only look around, and jump. And i can even control the cart when i'm outside of it!

E.G: i can steer/forward/backward the cart with W,A,S,D (which is in the lastest video) when i'm not inside it, i can jump, look around with my mouse while the cart is going AROUND me.

+3 votes     reply to comment
sasasa Jun 24 2011, 9:05am says:

Brilliant mapping and scripting

Please, ALL OF US HERE need RaD2

+9 votes     reply to comment
Vitiligo Jun 18 2011, 5:31pm says:

Great Mod, Thanks voor making!!!!

+2 votes     reply to comment
D()E Jun 16 2011, 6:43am says:

Awesome, Just Awesome 10/10.

+2 votes     reply to comment
DEEREE May 31 2011, 2:26pm says:

This is a blast! Absolutely stunning design and lots of fun!

+4 votes     reply to comment
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Released Jul 14, 2009
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1234 votes submitted.

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Highest Rated (13 agree) 10/10

Let me start by saying this was exactly what I was looking for when I began looking through the hl2 mods available here. For some reason I love any puzzle elements executed in the hl2 engine and enjoyed all the little puzzles you had to solve throughout the actual hl2 game itself and R&D pretty much mixes all those great moments into one sweet package.

Research & Development pretty much a perfect mod for any fps puzzle lovers and the only thing I can hope for now is a sequel :D

Feb 28 2011, 7:36pm by Akito8

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