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 53 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  (70 - 80 of 764)
SayHelloToMrBullet Apr 28 2012, 8:03am says:

Still my favourite mod of all time. Not even exaggerating.

+2 votes     reply to comment
guilhermemeneses Apr 19 2012, 2:18pm says:

lol zombie on the road

+3 votes     reply to comment
Th3Ph3ll Feb 27 2012, 3:56pm says:

I played though this whole game so if you want to see what its like befor you play it :)

+3 votes     reply to comment
TheBleachDoctor Feb 16 2012, 7:27pm says:

The whole thing with the cart exiting problem is preventing me from moving forward. Please fix.

+2 votes     reply to comment
randomparanoid Jan 21 2012, 8:47pm says:

This mod is excellent, really clever and well designed gameplay elements. Puzzles are completely original, and often better than even valve's puzzles in hl2.

+4 votes     reply to comment
Kopeke Dec 11 2011, 6:32pm says:

Hi!, I've done a let'S play series of this awesome mod, here is a link:

+2 votes     reply to comment
DoctorAmazing Nov 11 2011, 11:14am says:

This mod should go on the HL2:E2 mod page. Not the HL2 mod page.

+2 votes     reply to comment
Shadowbyte Oct 17 2011, 5:49am says:

I have a problem, when i try to launch the mod it launches normal hl2ep2 and its not just this mod some mods launch hl2 instead of running

+2 votes     reply to comment
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
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Half-Life 2: Episode Two Icon
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Release Date
Released Jul 13, 2009
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1241 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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