<s>
Half-Life	B-Application
:	I-Application
Echoes	I-Application
is	O
a	O
modification	O
of	O
the	O
first-person	O
shooter	O
video	O
game	O
Half-Life	B-Application
created	O
by	O
British	O
developer	O
James	O
"	O
MrGnang	O
"	O
Coburn	O
and	O
released	O
on	O
August	O
10	O
,	O
2018	O
.	O
</s>
<s>
The	O
mod	O
was	O
under	O
development	O
for	O
four	O
years	O
and	O
uses	O
the	O
GoldSrc	B-Application
engine	I-Application
.	O
</s>
<s>
Echoes	O
is	O
from	O
the	O
perspective	O
of	O
an	O
unnamed	O
scientist	O
from	O
the	O
Black	B-Application
Mesa	I-Application
Research	O
Facility	O
as	O
the	O
resonance	O
cascade	O
happens	O
and	O
has	O
the	O
player	O
fight	O
unused	O
monsters	O
and	O
the	O
HECU	O
with	O
the	O
G-Man	O
and	O
"	O
Kingpin	O
"	O
observing	O
the	O
player	O
.	O
</s>
<s>
As	O
a	O
mod	O
for	O
Half-Life	B-Application
,	O
Half-Life	B-Application
:	I-Application
Echoes	I-Application
is	O
a	O
first-person	O
shooter	O
that	O
differs	O
slightly	O
from	O
the	O
base	O
game	O
.	O
</s>
<s>
Echoes	O
is	O
set	O
in	O
the	O
same	O
location	O
and	O
time	O
frame	O
as	O
that	O
of	O
Half-Life	B-Application
,	O
taking	O
place	O
at	O
a	O
remote	O
New	O
Mexico	O
laboratory	O
called	O
the	O
Black	B-Application
Mesa	I-Application
Research	O
Facility	O
,	O
showing	O
the	O
events	O
of	O
Half-Life	B-Application
from	O
the	O
perspective	O
of	O
a	O
different	O
protagonist	O
.	O
</s>
<s>
An	O
unnamed	O
character	O
,	O
only	O
referred	O
as	O
"	O
Candidate	O
Twelve	O
,	O
"	O
arrives	O
for	O
work	O
at	O
the	O
Black	B-Application
Mesa	I-Application
Research	O
Facility	O
.	O
</s>
<s>
At	O
this	O
time	O
,	O
military	O
convoys	O
can	O
be	O
seen	O
entering	O
Black	B-Application
Mesa	I-Application
.	O
</s>
<s>
Along	O
the	O
way	O
,	O
Candidate	O
Twelve	O
encounters	O
visions	O
projected	O
by	O
a	O
sentient	O
entity	O
that	O
grants	O
visions	O
of	O
the	O
Universal	O
Union	O
,	O
also	O
known	O
as	O
the	O
Combine	O
,	O
from	O
Half-life	B-Application
2	O
.	O
</s>
<s>
After	O
prevailing	O
,	O
the	O
player	O
is	O
transported	O
to	O
the	O
Black	B-Application
Mesa	I-Application
staff	O
dormitories	O
,	O
where	O
he	O
is	O
witness	O
to	O
the	O
G-Man	O
'	O
s	O
rescue	O
of	O
Alyx	O
Vance	O
.	O
</s>
<s>
The	O
player	O
is	O
then	O
abandoned	O
by	O
the	O
G-Man	O
and	O
killed	O
by	O
the	O
nuclear	O
explosion	O
from	O
Half-life	B-Application
Opposing	I-Application
Force	I-Application
.	O
</s>
<s>
The	O
mod	O
was	O
announced	O
on	O
March	O
6	O
,	O
2014	O
,	O
by	O
Coburn	O
on	O
Mod	O
DB	O
,	O
citing	O
the	O
original	O
Half-Life	B-Application
game	O
and	O
user-created	O
mods	O
as	O
a	O
reason	O
to	O
"	O
give	O
back	O
to	O
the	O
community.	O
"	O
</s>
<s>
The	O
mod	O
uses	O
voice	O
lines	O
from	O
the	O
original	O
Half-Life	B-Application
,	O
as	O
well	O
as	O
Half-Life	B-Application
:	I-Application
Opposing	I-Application
Force	I-Application
,	O
Half-Life	B-Application
:	I-Application
Blue	I-Application
Shift	I-Application
,	O
Half-Life	B-Application
:	I-Application
Decay	I-Application
,	O
and	O
Half-Life	B-Application
2	I-Application
:	I-Application
Episode	I-Application
Two	I-Application
.	O
</s>
<s>
On	O
August	O
12	O
,	O
2021	O
,	O
a	O
team	O
of	O
developers	O
announced	O
a	O
remake	O
in	O
Black	B-Application
Mesa	I-Application
called	O
Black	B-Application
Mesa	I-Application
:	O
Candidate	O
Twelve	O
after	O
half	O
a	O
year	O
in	O
production	O
.	O
</s>
<s>
Matthew	O
Byrd	O
of	O
Den	O
of	O
Geek	O
called	O
the	O
mod	O
"	O
something	O
that	O
Half-Life	B-Application
fans	O
should	O
consider	O
playing.	O
"	O
</s>
<s>
Rick	O
Lane	O
of	O
Bit-Tech	O
called	O
it	O
"	O
a	O
superb	O
,	O
expansion-quality	O
mod	O
,	O
and	O
a	O
must-play	O
for	O
any	O
Half-Life	B-Application
fan.	O
"	O
</s>
<s>
Half-Life	B-Application
:	I-Application
Echoes	I-Application
placed	O
3rd	O
for	O
the	O
2018	O
Mod	O
of	O
the	O
Year	O
Players	O
 '	O
Choice	O
and	O
was	O
an	O
honorable	O
mention	O
for	O
the	O
2019	O
Mod	O
of	O
the	O
Year	O
.	O
</s>
