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 8 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  (720 - 730 of 771)
Zlandael Online
Zlandael

Where's the gnome?

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RuffeDK
RuffeDK

OK, that code to the gravity thing makes me sick! GET IT FIXED! Oterwise, nice mod.

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Icedecknight
Icedecknight

Yeah it took me a very long time to figure it out but you did figure it out didn't you? If you did then there is nothing to fix.

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alpha69a
alpha69a

i think he means how its almost impossible to hit the right buttons on the keypad.
unless of course i missed the point of the puzzle and the keypad is just a distraction?

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Icedecknight
Icedecknight

ehh all they need to do is add a crosshair to make it easier.

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Croco15
Croco15

Just type crosshair 1 into the console and problem fixed.

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Mustard
Mustard

WOW. This is an amazing mod, I want to see a sequel! The variety of the puzzles was great and a couple a bit challenging but I made it through, love that Cart-ride and Mr Whirly!

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107th_Raven
107th_Raven

Extraordinarily awesome !

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Varsity
Varsity

This mod is 2009's Minerva. It's just THAT good.

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GeneralTrivium
GeneralTrivium

I'm rather stuck. I put all the Antlion Guardians in their cages and then... Well nothing. Nowhere to go!

And when I try to get out of Mr. Whirly, it just continues controlling Mr. Whirly and I can't move!

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General_McAyhem
General_McAyhem

hey me too :(

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Icedecknight
Icedecknight

you geT OUT AND MOVE THE LEVER are you that lazy to move around and look.

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General_McAyhem
General_McAyhem

no stupid, when i get out of it it keeps on controling mr.whirly

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Icedecknight
Icedecknight

Idk spam keys then..

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Master_Of_Hiddenry
Master_Of_Hiddenry

Have you tried the space key to get out?

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GeneralTrivium
GeneralTrivium

Yes but it still continues to control Mr. Whirly.

Thus meaning I can't move except jump and turn.

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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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