Research and Development is a puzzle-centric mod for Half-Life 2: Episode Two featuring an unarmed player but plenty of violent mayhem.

Members Watching  (0 - 50 of 1,225)
Avatar

Finland *SpankSL*

Online 4 hours ago Joined Feb 14, 2012
Avatar

United States +GoldenCat+

Online 6 months ago Joined Aug 19, 2009
Avatar

Germany --JoKeR--

Online 3 hours ago Joined Feb 2, 2009
Avatar

Germany -=[Colorado]=-

Online 1 month ago Joined Dec 23, 2008
Avatar

Czech Republic -Lord-

Online 7 months ago Joined Mar 20, 2005
Avatar

United States -slash-

Online 3 weeks ago Joined Dec 1, 2010
Avatar

United States -Zeus-

Online 4 years ago Joined Jan 8, 2010
Avatar

Russian Federation .Haru

Online 2 weeks ago Joined Mar 3, 2009
Avatar

United Kingdom .illogical

Online 2 years ago Joined Dec 7, 2008
Avatar

Norway 050591

Online 1 week ago Joined Dec 31, 2009
Avatar

United States 0b1der

Online 1 week ago Joined Sep 14, 2013
Avatar

Russian Federation 100_o/o_f@ke

Online 2 days ago Joined Aug 3, 2010
Avatar

Germany 107th_Raven

Online 5 months ago Joined Aug 9, 2008
Avatar

Portugal 13370001

Online 1 year ago Joined Jun 8, 2009
Avatar

Germany 56er

Online 20 hours ago Joined Dec 3, 2007
Avatar

Antarctica 8ft_Robot

Online 5 hours ago Joined Mar 13, 2009
Avatar

United States AAAStudios

Online 6 hours ago Joined May 7, 2009
Avatar

Germany ab2cd4

Online 5 months ago Joined Jun 6, 2010
Avatar

Germany abarmbold

Online 10 months ago Joined Dec 25, 2012
Avatar

United Kingdom abuabu

Online 4 years ago Joined Apr 24, 2010
Avatar

Japan Ac30

Online 4 years ago Joined Feb 15, 2010
Avatar

United States aceskillers

Online 11 hours ago Joined Feb 26, 2012
Avatar

Poland AciDek

Online 3 years ago Joined Dec 30, 2007
Avatar

United States Acilius

Online 2 years ago Joined Jan 1, 2010
Avatar

Denmark Acolarh

Online 6 months ago Joined May 16, 2008
Avatar

Netherlands aCVfan

Online 6 hours ago Joined Jan 27, 2009
Avatar

Australia adamcirillo

Online 1 hour ago Joined Feb 28, 2008
Avatar

Ireland adamobrn

Online 4 months ago Joined Jan 31, 2006
Avatar

United States adam_825

Online 3 months ago Joined Feb 23, 2012
Avatar

United Kingdom Adana_Bandit

Online 1 week ago Joined Jun 27, 2008
Avatar

Germany AddiB

Online 4 years ago Joined Sep 26, 2009
Avatar

United States Addicted_Gamer

Online 10 months ago Joined Oct 29, 2009
Avatar

Sweden Admiral_Skeybar

Online 2 hours ago Joined Dec 10, 2009
Avatar

Italy adokas

Online 1 year ago Joined Jan 22, 2012
Avatar

Sweden Adox

Online 3 years ago Joined Aug 8, 2009
Avatar

Poland ADreamer

Online 1 day ago Joined Jul 10, 2010
Avatar

France advandced

Online 2 months ago Joined Nov 21, 2007
Avatar

Sweden aeg4k

Online 1 week ago Joined Jan 29, 2009
Avatar

United Kingdom Aequus

Online 10 months ago Joined Aug 9, 2009
Avatar

New Zealand aerozol

Online 1 year ago Joined Jun 30, 2009
Avatar

United States aeVersatyle

Online 4 years ago Joined Jun 20, 2009
Avatar

Taiwan AJ917

Online 5 months ago Joined Aug 25, 2012
Avatar

Russian Federation akaSPY

Online 1 month ago Joined Jul 6, 2009
Avatar

United States akjohnny

Online 2 minutes ago Joined Dec 8, 2005
Avatar

Macedonia Akujin

Online 1 week ago Joined Apr 1, 2006
Avatar

Finland Akutsi

Online 1 year ago Joined Aug 10, 2009
Avatar

Brazil aleixoteixeira

Online 1 day ago Joined Jun 3, 2007
Avatar

Sweden alesi08(swe)

Online 5 hours ago Joined Dec 7, 2008
Avatar

Germany alex57347614@nybella

Online 1 year ago Joined Sep 10, 2008
Avatar

Russian Federation Alfrodos

Online 4 years ago Joined Nov 17, 2007
Icon
Half-Life 2 Icon
Platform
Windows
Developed By
mbortolino
Contact
Send Message
Release Date
Released Jul 14, 2009
Mod Watch
Track this mod
Member Statistics
Members
1,225
Online
8
Views
3,512,453
Views Today
1,261
Last Online
TheAughts
TheAughts Online 1 minute ago
akjohnny
akjohnny Online 2 minutes ago
Zlandael
Zlandael Online 2 minutes ago
Dr_Nick
Dr_Nick Online 3 minutes ago
xXxHlTMANxXx
xXxHlTMANxXx Online 5 minutes ago
Colossal
Colossal Online 5 minutes ago
MattmanDude
MattmanDude Online 5 minutes ago
rlxorsla
rlxorsla Online 8 minutes ago
Nihillo
Nihillo Online 13 minutes ago
huntra94
huntra94 Online 15 minutes ago
yamen21
yamen21 Online 20 minutes ago
Astron840
Astron840 Online 32 minutes ago
S-7351_94
S-7351_94 Online 33 minutes ago
INtense!
INtense! Online 43 minutes ago
Meraqel
Meraqel Online 47 minutes ago