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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RPS digs R&D

News 28 comments

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.

Research and Development released

Research and Development released

News 99 comments

Matt Bortolino's excellent HL2: Episode Two "action puzzler" has been released from nowhere!

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View 2009's mod of the year, as picked by you the players.

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2009 has been a fantastic year for modding and indie gaming. With the highest amount of recorded featured releases ever on ModDB it can still go over...

WSIP: Research and Development

WSIP: Research and Development

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

RSS Files
Research and Development Patch - Source SDK 2013

Research and Development Patch - Source SDK 2013

Patch 36 comments

This patch fixes most issues related to engine branch incompatibility and is designed to run using the latest "Beta" of Source SDK Base 2013 Singleplayer...

Research and Development (installer)

Research and Development (installer)

Full Version 42 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

Full Version 33 comments

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

Comments  (0 - 10 of 773)
ijooS
ijooS

Gyazo.com
What happened?

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miskokuban
miskokuban

Make this comment by Kazemeka sticky or please update gameinfo.txt properly ...

Kazemeka Sep 4 2015
Background fix for EP2 games (The following is for R&D):

[ url = Pastebin.com /url ]

Copy the code from pastebin into gameinfo.txt

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Kazemeka
Kazemeka

Meh just keep reposting..

Also the pastebin link is broken (some extra characters put in that are not needed for the URL). Here, have the unbroken one:

Pastebin.com

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FL0MPY
FL0MPY

please help me when starting the game I have a black screen and there is written the download and then the game crashes out what should I do with it?

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Mr.Duke
Mr.Duke

Hello

copy the folder "bin" from
xxxxx\SteamApps\common\Half-Life 2\hl2\
to
xxxxx\SteamApps\sourcemods\Research and Development\
and replace it.

next step:
- Right click on "Research and Development".
- Select "Set Launch Options" in the "General" tab.
- Enter the following without quotes: "-allowdebug"
- Click OK.

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HairyHog77
HairyHog77

it doesnt work anymore

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BshiftCalhoun
BshiftCalhoun

It does, install the Source SDK 2013 patch.

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9.6

1267 votes submitted.

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Highest Rated (14 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 by Akito8

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