<s>
Spelunky	B-Application
is	O
a	O
2008	O
source-available	B-License
2D	O
platform	O
game	O
created	O
by	O
independent	O
developer	O
Derek	O
Yu	O
and	O
released	O
as	O
freeware	B-License
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
It	O
was	O
remade	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
in	O
2012	O
,	O
with	O
ports	O
of	O
the	O
new	O
version	O
following	O
for	O
various	O
platforms	O
,	O
including	O
back	O
to	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
spelunker	B-Application
who	O
explores	O
a	O
series	O
of	O
caves	O
while	O
collecting	O
treasure	O
,	O
saving	O
damsels	O
,	O
fighting	O
enemies	O
,	O
and	O
dodging	O
traps	O
.	O
</s>
<s>
The	O
source	O
code	O
of	O
the	O
Windows	B-Application
version	O
was	O
released	O
on	O
December	O
25	O
,	O
2009	O
.	O
</s>
<s>
An	O
enhanced	O
version	O
for	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
was	O
released	O
on	O
July	O
4	O
,	O
2012	O
.	O
</s>
<s>
The	O
enhanced	O
version	O
was	O
later	O
released	O
for	O
Windows	B-Application
and	O
PlayStation	B-Operating_System
3	I-Operating_System
in	O
August	O
2013	O
,	O
and	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
on	O
October	O
7	O
,	O
2014	O
.	O
</s>
<s>
The	O
remake	O
was	O
also	O
made	O
available	O
on	O
Xbox	B-Device
One	I-Device
via	O
backward	B-General_Concept
compatibility	I-General_Concept
in	O
December	O
2015	O
.	O
</s>
<s>
A	O
fanmade	O
,	O
ChromeOS	B-Operating_System
version	O
of	O
the	O
original	O
game	O
was	O
made	O
as	O
well	O
,	O
titled	O
Spelunky	B-Application
HTML5	B-Application
.	O
</s>
<s>
A	O
port	O
for	O
Nintendo	B-Application
Switch	I-Application
was	O
released	O
on	O
August	O
26	O
,	O
2021	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Spelunky	B-Application
2	I-Application
,	O
was	O
released	O
in	O
September	O
2020	O
.	O
</s>
<s>
Spelunky	B-Application
was	O
one	O
of	O
the	O
first	O
games	O
to	O
borrow	O
concepts	O
from	O
roguelikes	O
and	O
combine	O
them	O
with	O
real-time	O
side-scrolling	O
platformer	O
elements	O
.	O
</s>
<s>
Spelunky	B-Application
received	O
critical	O
acclaim	O
for	O
its	O
gameplay	O
,	O
atmosphere	O
and	O
design	O
,	O
though	O
some	O
controls	O
and	O
multiplayer	O
elements	O
polarized	O
critics	O
.	O
</s>
<s>
The	O
player	O
controls	O
an	O
unnamed	O
adventurer	O
,	O
known	O
as	O
the	O
spelunker	B-Application
.	O
</s>
<s>
The	O
spelunker	B-Application
can	O
whip	O
or	O
jump	O
on	O
enemies	O
to	O
defeat	O
them	O
,	O
pick	O
up	O
items	O
that	O
can	O
be	O
thrown	O
to	O
either	O
attack	O
enemies	O
or	O
set	O
off	O
traps	O
,	O
and	O
use	O
a	O
limited	O
supply	O
of	O
bombs	O
and	O
ropes	O
to	O
navigate	O
the	O
caves	O
.	O
</s>
<s>
Some	O
of	O
the	O
latter	O
have	O
supernatural	O
abilities	O
,	O
including	O
kapalas	O
,	O
hedjets	O
,	O
crystal	O
skulls	O
and	O
golden	O
ankhs	B-Application
,	O
though	O
many	O
of	O
these	O
special	O
items	O
can	O
only	O
be	O
gained	O
through	O
secret	O
methods	O
,	O
like	O
combining	O
other	O
items	O
together	O
.	O
</s>
<s>
It	O
's	O
possible	O
to	O
unlock	O
the	O
damsel	O
as	O
a	O
playable	O
character	O
;	O
gameplay	O
is	O
identical	O
,	O
except	O
that	O
the	O
player	O
encounters	O
spelunkers	B-Application
to	O
rescue	O
.	O
</s>
<s>
The	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
,	O
as	O
well	O
as	O
the	O
PlayStation	O
Network	O
versions	O
of	O
the	O
game	O
feature	O
local	O
multiplayer	O
(	O
co-op	O
and	O
deathmatch	O
)	O
for	O
up	O
to	O
four	O
players	O
.	O
</s>
<s>
The	O
original	O
Spelunky	B-Application
also	O
includes	O
a	O
level	O
editor	O
,	O
in	O
which	O
players	O
can	O
create	O
their	O
own	O
non-random	O
levels	O
to	O
share	O
with	O
others	O
.	O
</s>
<s>
Spelunky	B-Application
was	O
created	O
by	O
Derek	O
Yu	O
and	O
released	O
as	O
freeware	B-License
for	O
Microsoft	B-Application
Windows	I-Application
on	O
December	O
21	O
,	O
2008	O
.	O
</s>
<s>
The	O
source	O
code	O
of	O
the	O
2008	O
Windows	B-Application
version	O
was	O
published	O
under	O
a	O
software	B-License
license	I-License
permitting	O
noncommercial	O
distribution	O
and	O
modification	O
on	O
December	O
25	O
,	O
2009	O
.	O
</s>
<s>
Based	O
on	O
this	O
source	O
code	O
the	O
game	O
community	O
created	O
a	O
community	O
patch	O
which	O
added	O
support	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
The	O
first	O
version	O
of	O
Spelunky	B-Application
classic	I-Application
was	O
released	O
as	O
freeware	B-License
on	O
a	O
private	O
space	O
called	O
TIGSource	O
forums	O
where	O
some	O
players	O
were	O
exposed	O
to	O
the	O
game	O
and	O
provided	O
Derek	O
Yu	O
with	O
immediate	O
feedback	O
for	O
the	O
game	O
creating	O
a	O
loop	O
of	O
development	O
where	O
new	O
additions	O
were	O
added	O
to	O
the	O
game	O
in	O
response	O
to	O
player	O
feedback	O
.	O
</s>
<s>
Jonathan	O
Blow	O
,	O
developer	O
of	O
Braid	B-Application
,	O
reached	O
out	O
to	O
Derek	O
concerning	O
releasing	O
the	O
game	O
officially	O
on	O
console	O
platforms	O
which	O
was	O
a	O
huge	O
benefit	O
for	O
indie	O
developers	O
at	O
the	O
time	O
considering	O
the	O
success	O
of	O
other	O
indie	O
games	O
at	O
the	O
time	O
such	O
as	O
Castle	B-Application
Crashers	I-Application
and	O
World	B-Application
of	I-Application
Goo	I-Application
.	O
</s>
<s>
An	O
enhanced	O
remake	O
version	O
for	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
was	O
released	O
on	O
July	O
4	O
,	O
2012	O
.	O
</s>
<s>
The	O
enhanced	O
edition	O
was	O
also	O
released	O
on	O
PC	O
on	O
August	O
8	O
,	O
2013	O
and	O
for	O
PlayStation	B-Operating_System
3	I-Operating_System
on	O
August	O
27	O
and	O
28	O
,	O
2013	O
.	O
</s>
<s>
Spelunky	B-Application
draws	O
from	O
La-Mulana	B-Application
,	O
Rick	B-Application
Dangerous	I-Application
,	O
and	O
Spelunker	B-Application
for	O
its	O
visual	O
styling	O
,	O
character	O
design	O
,	O
gameplay	O
elements	O
and	O
general	O
mechanics	O
.	O
</s>
<s>
By	O
taking	O
these	O
higher	O
concepts	O
and	O
combining	O
them	O
with	O
the	O
features	O
of	O
platform	O
games	O
he	O
was	O
able	O
to	O
develop	O
the	O
initial	O
conception	O
for	O
Spelunky	B-Application
using	O
procedural	O
generation	O
.	O
</s>
<s>
Aztec	B-Application
,	O
Balding	O
's	O
Quest	O
,	O
NetHack	B-Application
,	O
Indiana	O
Jones	O
,	O
and	O
Cave	B-Application
Story	I-Application
have	O
also	O
been	O
credited	O
as	O
influences	O
.	O
</s>
<s>
Spelunky	B-Application
is	O
notorious	O
for	O
its	O
difficult	O
gameplay	O
as	O
many	O
hazards	O
and	O
enemies	O
are	O
capable	O
of	O
killing	O
the	O
player	O
quickly	O
.	O
</s>
<s>
Even	O
Edmund	O
McMillen	O
,	O
a	O
notable	O
game	O
developer	O
who	O
created	O
successfully	O
challenging	O
games	O
such	O
as	O
Super	B-Application
Meat	I-Application
Boy	I-Application
,	O
told	O
him	O
that	O
the	O
starting	O
area	O
’s	O
arrow	O
traps	O
should	O
do	O
less	O
damage	O
,	O
but	O
Derek	O
was	O
adamant	O
that	O
the	O
immediate	O
difficulty	O
was	O
necessary	O
to	O
show	O
players	O
not	O
already	O
familiar	O
with	O
the	O
roguelike	O
structure	O
that	O
death	O
and	O
failure	O
is	O
an	O
expected	O
part	O
of	O
gameplay	O
.	O
</s>
<s>
Destructibility	O
of	O
terrain	O
was	O
also	O
a	O
key	O
element	O
of	O
the	O
level	O
design	O
in	O
Spelunky	B-Application
inspired	O
by	O
the	O
pickaxe	O
’s	O
abilities	O
in	O
another	O
roguelike	O
game	O
called	O
NetHack	B-Application
.	O
</s>
<s>
IGN	O
gave	O
the	O
XBLA	B-Device
version	O
a	O
score	O
of	O
9.0	O
and	O
an	O
Editor	O
's	O
Choice	O
award	O
,	O
calling	O
it	O
"	O
a	O
superb	O
2D	O
platformer	O
that	O
's	O
as	O
easy	O
to	O
hate	O
as	O
it	O
is	O
to	O
love	O
"	O
.	O
</s>
<s>
PC	O
Gamer	O
UK	O
chose	O
the	O
remake	O
of	O
Spelunky	B-Application
as	O
its	O
2013	O
game	O
of	O
the	O
year	O
.	O
</s>
<s>
Eurogamer	O
ranked	O
Spelunky	B-Application
third	O
on	O
its	O
Games	O
of	O
the	O
Generation	O
list	O
.	O
</s>
<s>
In	O
2015	O
,	O
Rock	O
,	O
Paper	O
,	O
Shotgun	O
ranked	O
the	O
original	O
Spelunky	B-Application
1st	O
on	O
its	O
The	O
50	O
Best	O
Free	O
Games	O
On	O
PC	O
list	O
.	O
</s>
<s>
A	O
difficult	O
challenge	O
run	O
of	O
Spelunky	B-Application
HD	I-Application
,	O
known	O
as	O
an	O
"	O
eggplant	O
run	O
"	O
,	O
was	O
reported	O
on	O
by	O
various	O
video	O
game	O
news	O
websites	O
.	O
</s>
<s>
In	O
2019	O
,	O
Spelunky	B-Application
was	O
ranked	O
36th	O
on	O
The	O
Guardian	O
newspaper	O
's	O
The	O
50	O
Best	O
Video	O
Games	O
of	O
the	O
21st	O
Century	O
list	O
.	O
</s>
<s>
The	O
spelunker	B-Application
,	O
the	O
main	O
character	O
of	O
Spelunky	B-Application
,	O
is	O
one	O
of	O
several	O
indie	O
game	O
characters	O
who	O
can	O
be	O
unlocked	O
and	O
played	O
in	O
Super	B-Application
Meat	I-Application
Boy	I-Application
.	O
</s>
<s>
Referred	O
to	O
as	O
"	O
Spelunky	B-Application
"	O
in	O
Super	B-Application
Meat	I-Application
Boy	I-Application
,	O
the	O
character	O
has	O
the	O
special	O
power	O
of	O
explosive	O
jumps	O
(	O
referencing	O
the	O
bombs	O
he	O
carries	O
in	O
the	O
original	O
game	O
)	O
,	O
and	O
he	O
is	O
exclusive	O
to	O
the	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
version	O
.	O
</s>
<s>
He	O
also	O
makes	O
an	O
appearance	O
in	O
Runner2	B-Application
as	O
a	O
DLC	O
character	O
.	O
</s>
<s>
Spelunky	B-Application
was	O
a	O
commercial	O
success	O
,	O
selling	O
over	O
one	O
million	O
units	O
by	O
2016	O
.	O
</s>
