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

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

A Year in Review - July

A Year in Review - July

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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

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 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.

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Gamer819
Gamer819

Outstanding Mod! Puzzle based action games are my favorite and you made a good game great. Thanks for you efforts and hard work here. You would get a 10 rating from me but alas, I'm too new.

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Guest
Guest

I don't have Half-Life 2 but I have the source sdk. I thought I could play with that but when i tried to launch the mod it just brings me to the half life 2 page on steam. Do I have to have the actual game?

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sagesh
sagesh

Yes, you need Half-Life 2: Episode Two on Steam. Did you even read the description? "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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Guest
Guest

Can anyone help? It gives me an error message on startup. "Cant find backround image materials/console/startup_loading.vtf" Anyone know how to fix this?

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Guest
Guest

Ok, so I replaced the files, but now it says that HF2.exe has stopped working every time I try to play it. Any help?

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sagesh
sagesh

What did you replace? Have you tried maxexcloo's suggestion?

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ChopperGunnerNL
ChopperGunnerNL

Can you fix some bugs and port the mod to Steampipe?

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sagesh
sagesh

Well I think the mod still works fine, and it works with steampipe version of HL2 as long as you fix the gameinfo.txt by following maxexcloo's advice (you can see it here in the comments).

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sagesh
sagesh

I just finished this mod, and it's really AWESOME! I would love to play a part II if there is any :P

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9.6

1251 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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