Statistics for Valve games

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Hint	Answer	% Correct
HL	Half life	100%
HL2	Half life 2	100%
CS	Counter strike	79%
CS 1.6	Counter strike 1.6	79%
TF2	Team fortress 2	74%
HL2 E1	Half life 2 episode 1	68%
HL2 E2	Half life 2 episode 2	68%
LFD	Left 4 dead	68%
LFD2	Left 4 dead 2	68%
P	Portal	68%
P2	Portal 2	68%
CSGO	Counter strike global offensive	63%
CSS	Counter strike source	58%
HLA	Half life alyx	58%
TFC	Team fortress classic	53%
HLBS	Half life blue shift	47%
HLS	Half life source	47%
D2	Dota 2	37%
HL2 LC	Half life 2 lost coast	37%
CSCD	Counter strike condition zero	26%
DOD	Day of defeat	26%
DODS	Day of defeat source	26%
A	Artifact	21%
BM	Black mesa	21%
HLD	Half life decay	21%
HLOF	Half life opposing forces	21%
AS	Alien swarm	16%
DC	Deathmatch classic	16%
CSNZ	Counter strike nexon zombies	11%
CSO	Counter strike online	11%
CSO2	Counter strike online 2	11%
PSM	Portal stories mel	11%
AHL	Aperture hand lab	5%
CSN	Counter strike neo	5%
PSA	Portal still alive	5%
PTFV	Portal the flash version	5%
ADJ	Aperture desk job	0%
BC	Bridge constructor	0%
CG	Codename gordon	0%
CSM	Counter strike maldivas	0%
HL2S	Half life 2 survivor	0%
HLC	Half life caged	0%
HLE	Half life echoes	0%
TI	Tactical intervention	0%
TL	The lab	0%