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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28 comments by Varsity on Jul 20th, 2009

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.

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Research and Development (installer)

Research and Development (installer)

Jul 18, 2009 Full Version 53 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

Jul 17, 2009 Full Version 29 comments

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

Post comment Comments  (50 - 60 of 758)
maccyf
maccyf Nov 25 2012, 2:53am says:

I'm having a problem...
I installed the game fine, have been playing it fine, and am loving it. The problem is that in the level with Mr. Whirly every time i get out, A,W,S+D still affect the cart.
HELP!

+2 votes     reply to comment
Soul_taker
Soul_taker Dec 30 2012, 5:09am replied:

i have the same problem D:

+1 vote     reply to comment
maccyf
maccyf Mar 25 2013, 5:33pm replied:

I found out how to fix this- 'Luther2K' gives this fix on the developers profile:
"This got me too. I solved it by adding a command via the console. You should be able to add it to a script file too:

bind k ent_fire ui disable

which will bind the command 'ent_fire ui disable' to k. Use the 'k' key to properly exit Mr. Whirly. 'ent_fire' is a command used to fire commands to objects and is usually used as a debugging tool. In this case it tells the current UI (in this case, Mr. Whirly's fans) to disable itself, returning control to the player."

And 'Valius_Forter' replied with this:

"I had to change your command a little;

bind k ent_fire ui deactivate

'disable' didn't work, so I tried writing it from the beginning and that showed up and worked. Cheers mate! "

Hope this sorts the problem for you as well!

+1 vote     reply to comment
LINC
LINC Nov 21 2012, 2:11am says:

If your intention was to give the player many "Aha!" moments in gaming history; This is it. I loved it. Hell, it took me a year of coming back to solve a puzzle. I was dumbfounded at realizing how simple things really are. Great mod!

+2 votes     reply to comment
yaznee
yaznee Nov 16 2012, 4:18pm says:

Downloading now, looks sweet :)

+1 vote     reply to comment
Hazama15
Hazama15 Nov 12 2012, 6:38pm says:

I expect to see a sequel the ending was perfect for one. I did get frustrated at times but overall a great mod.
If there was a sequel i would definately play it too.

+1 vote     reply to comment
ferdyfist
ferdyfist Nov 12 2012, 3:51pm says:

Best damn singleplayer mod I've everplayed!
Wow, just wow!
10/10

+1 vote     reply to comment
chrisc44890
chrisc44890 Nov 3 2012, 3:57pm says:

when the fast zombie breaks out of its cage (picture shown on the news article) my game freezes, what do i do?

+1 vote     reply to comment
asdfzxc
asdfzxc Oct 13 2012, 3:17pm says:

Is the password for the cube fixed? The lights don't work anymore so I can't solve the puzzle normally.

0 votes     reply to comment
ProKamikadze
ProKamikadze Jul 24 2012, 9:27am says:

It's a must play for mods industry...

+3 votes     reply to comment
Mario787
Mario787 Jul 14 2012, 5:37am says:

Only one question remains: When will Research and Development 2 be released?

+4 votes     reply to comment
jackh902
jackh902 Sep 11 2012, 9:20am replied:

didnt know the was going to be a R&D2

+3 votes     reply to comment
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Half-Life 2: Episode Two Icon
Platform
Windows
Developed By
mbortolino
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Release Date
Released Jul 13, 2009
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9.6

1239 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, 7:36pm by Akito8

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First Person Shooter
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