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!

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.

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Research and Development Patch - Source SDK 2013

Research and Development Patch - Source SDK 2013

Patch 19 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 55 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.

Comments  (0 - 10 of 773)
PyroScorcher75
PyroScorcher75

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. Does anyone know how to fix this

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Guest
Guest

Great mod.
Works great in VR and with Razer Hydra.

Thanks for this mod.

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Ninbat
Ninbat

Every single time I try to play the game, it crashes. I don't know if the patch fixes this. If it does, can someone help me with how to download a patch?

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Kazemeka
Kazemeka

Background fix for EP2 games (The following is for R&D):

Pastebin.com

Copy the code from pastebin into gameinfo.txt

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captainmimiga
captainmimiga

That actually works.
Thanks.

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Plumbatty
Plumbatty

Found a pretty terrible bug that keeps you from making progress. Apparently the antlion "brenda" will go straight to a hanging cable and die as soon as you open the gates at the beginning, meaning I can't make any progress at all! I honestly thought it was some puzzle mechanic at first, but no it is not.

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LukasTheBro
LukasTheBro

Absolutely AMAZING Mod!
The Puzzles are innovative and fun, it had an fair difficulty and Story.
I love this mod!

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Original_Ninja
Original_Ninja

FIX THE DAMN BACKGROUND

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ajdaman666
ajdaman666

BACKGROUND FIX

Locate the gameinfo.txt file in the mod folder, open it and replace it with this:

"GameInfo"
{
name "MODNAME"
game "MODNAME"
title "MODNAME"
title2 ""
type singleplayer_only
icon "resource\icon"
homepage ""
developer ""

FileSystem
{
SteamAppId 220

SearchPaths
{
game_lv hl2/hl2_lv.vpk
game+mod hl2/hl2_sound_vo_english.vpk
game+mod hl2/hl2_pak.vpk
game |all_source_engine_paths|hl2/hl2_textures.vpk
game |all_source_engine_paths|hl2/hl2_sound_misc.vpk
game |all_source_engine_paths|hl2/hl2_misc.vpk
platform |all_source_engine_paths|platform/platform_misc.vpk
mod+mod_write+default_write_path |gameinfo_path|..
game+game_write hl2
gamebin hl2/bin
game |all_source_engine_paths|hl2
platform |all_source_engine_paths|platform
}
}
}

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TheGamer125
TheGamer125

Background missing, please fix it or how to fix :)

Reply Good karma Bad karma+1 vote
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9.6

1252 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 by Akito8

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