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  (70 - 80 of 769)
Mario787 Jul 14 2012, 5:37am says:

Only one question remains: When will Research and Development 2 be released?

+4 votes     reply to comment
jackh902 Sep 11 2012, 9:20am replied:

didnt know the was going to be a R&D2

+3 votes     reply to comment
bob137 Jun 1 2012, 8:08pm says:

best hl2 mod next to garry's mod!

-1 votes     reply to comment
jackh902 Sep 11 2012, 9:22am replied:

sort your priorities out

+1 vote     reply to comment
Rikachu May 7 2012, 12:56am says:

I do sure hope for a sequel. Maybe. Possibly.

I talked about this game on my profile, despite it being such a long time since this mod was released. This is one of the best puzzle mods for the half life 2 engine; and if the developer is still lurking here I want to thank you for delivering such an amazing mod.

+2 votes     reply to comment
jonthe838 Apr 29 2012, 6:50am says:

I remember when this was released ! This mod is one of the best mods ever to HL2 !
Too bad that it died :/

0 votes     reply to comment
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
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Half-Life 2: Episode Two Icon
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Release Date
Released Jul 2009
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1245 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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