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 114 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 Files
Research and Development Patch - Source SDK 2013

Research and Development Patch - Source SDK 2013

Patch 41 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 41 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 781)
sailor7k
sailor7k

I made a Custom Grid image for steam!
Imgur.com

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Terg500
Terg500

What a classic. I remember this getting released shorty after I made my Moddb account, what an unexpected surprise it was. Has it been 10 years already?

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adore33
adore33

I'm 10 years late playing this mod. Playing it now and its kick ***. Nice to see level design with some environmental puzzle/interactions. I got to that room with the Shovel and I knew exactly what to do with it. Very intuitive design guys.

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identical1407
identical1407

help someone the game doesnt show up in library i tried the pastebin nothing please help! :(

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ethan2awesome
ethan2awesome

The game launches 100% fine, but whenever I try to press new game to select a chapter, nothing appears. I've tried using the "map" command in the console, and it only lets me select episode 2 maps. Help anyone?

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empleat
empleat

Same cannot start new game, when i click on new game - nothing happens.

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gman29
gman29

For some reason, when I start it up, It says I'm missing a .vtf file

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drunkenheadcrab
drunkenheadcrab

replace searchpaths with this in gameinfo.txt

SearchPaths
{
game+mod |gameinfo_path|.
platform |gameinfo_path|.
game_lv hl2/hl2_lv.vpk
game+mod ep2/ep2_english.vpk
game+mod ep2/ep2_pak.vpk
game |all_source_engine_paths|episodic/ep1_english.vpk
game |all_source_engine_paths|episodic/ep1_pak.vpk
game |all_source_engine_paths|hl2/hl2_english.vpk
game |all_source_engine_paths|hl2/hl2_pak.vpk
game |all_source_engine_paths|hl2/hl2_textures.vpk
game |all_source_engine_paths|hl2/hl2_sound_vo_english.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 |gameinfo_path|.
gamebin episodic/bin
game |all_source_engine_paths|episodic
game |all_source_engine_paths|hl2
platform |all_source_engine_paths|platform
}
}
}

its a commonn bug with the steampipe update

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ijooS
ijooS

Gyazo.com
What happened?

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Guest
Guest

http s:/ /gyazo.c om/00e9b78f29fcd49a10931dedbbb95e26
What have I done wrong?

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Community Rating

Average

9.6

1270 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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