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 98 comments

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

Players Choice - Mod of the Year

Players Choice - Mod of the Year

Feature 115 comments

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

A Year in Review - July

A Year in Review - July

Feature 4 comments

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

Feature 31 comments

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

RSS feed Downloads
Research and Development Patch - Source SDK 2013

Research and Development Patch - Source SDK 2013

Patch 7 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 54 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 30 comments

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

Post comment Comments  (20 - 30 of 771)
Dune_Jumper
Dune_Jumper

Why does Mod DB say this just updated?
Weird, a ton of mods say they were updated but aren't actually. How bizzare.

Reply Good karma Bad karma+7 votes
TheUnbeholden Online
TheUnbeholden

They where listed incorrectly as HL2 mods, now they are under HL:Ep2. They specifically require it to run.

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RobosergTV
RobosergTV

Полное прохождение мода c русскими комментариями:
Youtube.com
(Full walkthrough with russian commentary)

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AidenDemon
AidenDemon

Иди нахуй.

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streak1
streak1

Anyone else having problems with Mr. Whirly? I keep trying to leave the vehicle, and whenever I do, my controls screw up. Leaving lets me jump, but all of my movement buttons are still bound to the vehicle.

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streak1
streak1

Despite this, I was still able to finish the game, aided with noclip. I essentially had to solve all of the puzzles before I got to them. Conveniently, it gave me a vehicle after I entered the garage.

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grumpy1415063161
grumpy1415063161

Can't get it to work. Whenever I launch it, i get 'Failed to load the launcher dll. The specified module could not be found'. Googled around a and didnt find anything. Any ideas?

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Guest
Guest

That happened with me but I had a messed up downloaded mod. Instead my half-life 2 games wouldn't work. turns out I was missing steam_api.dll for half life 2. I copied and pasted the file from Half life deathmatch to solve the problem. Maybe you need Half Life 2 steam_api.dll?

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KillerCubePlays
KillerCubePlays

how about "Can't find background image materials/console/startup_loading.vtf

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TrevorMag
TrevorMag

Played again after SteamPipe, did the SearchPaths fix. All good, until near the end, then Mr Whirly's chopper stops whirling after a while. Still chops, still makes the sound, still kills the strider, but the chopper (both when driving and in the mini-cutscenes) is fixed in one position. Not a biggie.

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eternalblast
eternalblast

OMG this mod is AMAZING!!!!! why isn't this on steam?

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EddAdrian
EddAdrian

did it work for you? i used the archive download and it just enters the game black screen and nothing happens. did you use the installer?

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KillerCubePlays
KillerCubePlays

it stucks on a black screen, because it can't find startup_loading.vtf

i also have this problem

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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 by Akito8

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