<s>
Oasis	B-General_Concept
is	O
a	O
turn-based	O
strategy	O
video	O
game	O
developed	O
by	O
American	O
studio	O
Mind	O
Control	O
Software	O
and	O
published	O
for	O
Microsoft	B-Application
Windows	I-Application
by	O
PlayFirst	O
in	O
April	O
2005	O
.	O
</s>
<s>
Konami	O
released	O
a	O
mobile	O
phone	O
port	O
in	O
2006	O
and	O
Electrified	O
Games	O
released	O
an	O
iPad	B-Device
version	O
,	O
renamed	O
as	O
Defense	B-Application
of	I-Application
the	I-Application
Oasis	I-Application
,	O
in	O
2010	O
.	O
</s>
<s>
On	O
August	O
25	O
,	O
2020	O
,	O
the	O
iPad	B-Device
version	O
was	O
published	O
on	O
Steam	B-Application
.	O
</s>
<s>
Oasis	B-General_Concept
is	O
a	O
casual	O
game	O
set	O
in	O
ancient	O
Egypt	O
that	O
combines	O
Civilization-style	O
strategy	O
and	O
puzzle	O
gameplay	O
.	O
</s>
<s>
Oasis	B-General_Concept
"	O
has	O
been	O
described	O
as	O
Civilization	O
meets	O
Minesweeper	B-Application
"	O
.	O
</s>
<s>
Each	O
level	O
of	O
Oasis	B-General_Concept
consists	O
of	O
a	O
single	O
screen	O
with	O
a	O
10x10	O
grid	O
of	O
randomly	O
generated	O
terrain	O
.	O
</s>
<s>
The	O
eponymous	O
oasis	B-General_Concept
covers	O
several	O
squares	O
of	O
each	O
level	O
and	O
lying	O
in	O
a	O
random	O
oasis	B-General_Concept
tile	O
is	O
the	O
obelisk	O
which	O
contains	O
the	O
level	O
's	O
glyph	B-Application
of	O
power	O
.	O
</s>
<s>
The	O
primary	O
goal	O
is	O
to	O
find	O
the	O
glyph	B-Application
and	O
protect	O
it	O
from	O
barbarians	B-Application
who	O
attack	O
after	O
the	O
85th	O
turn	O
from	O
tiles	O
marked	O
by	O
blue	O
cairns	O
.	O
</s>
<s>
To	O
stop	O
the	O
barbarians	B-Application
from	O
destroying	O
the	O
glyph	B-Application
the	O
player	O
must	O
find	O
cities	O
and	O
use	O
them	O
to	O
mount	O
a	O
defense	O
.	O
</s>
<s>
The	O
player	O
wins	O
the	O
game	O
by	O
finding	O
and	O
defending	O
12	O
glyphs	B-Application
.	O
</s>
<s>
Each	O
scenario	O
has	O
its	O
own	O
theme	O
,	O
and	O
each	O
level	O
within	O
a	O
scenario	O
is	O
distinguished	O
by	O
a	O
mix	O
of	O
special	O
gameplay	O
elements	O
related	O
to	O
the	O
theme	O
,	O
such	O
as	O
barbarian	B-Application
strongholds	O
,	O
jungles	O
,	O
islands	O
,	O
plagues	O
,	O
and	O
others	O
.	O
</s>
<s>
When	O
found	O
,	O
advisors	O
pledge	O
to	O
join	O
the	O
player	O
if	O
enough	O
cities	O
survive	O
the	O
barbarian	B-Application
attack	O
.	O
</s>
<s>
Certain	O
features	O
are	O
present	O
on	O
every	O
or	O
nearly	O
every	O
map	O
:	O
the	O
oasis	B-General_Concept
,	O
cairns	O
,	O
cities	O
,	O
the	O
nomad	O
camp	O
,	O
and	O
mountains	O
.	O
</s>
<s>
There	O
are	O
clues	O
to	O
finding	O
each	O
feature	O
:	O
the	O
oasis	B-General_Concept
and	O
cairns	O
always	O
appear	O
on	O
the	O
edge	O
,	O
cities	O
are	O
surrounded	O
on	O
all	O
eight	O
sides	O
by	O
crop	O
tiles	O
,	O
the	O
nomad	O
camp	O
appears	O
in	O
the	O
largest	O
block	O
of	O
desert	O
,	O
mountains	O
can	O
be	O
seen	O
from	O
one	O
square	O
away	O
,	O
and	O
mountain	O
ranges	O
are	O
either	O
'	O
U	O
 '	O
shaped	O
,	O
'	O
S	O
 '	O
shaped	O
,	O
or	O
stretch	O
vertically	O
across	O
the	O
map	O
.	O
</s>
<s>
This	O
sometimes	O
results	O
in	O
being	O
able	O
to	O
find	O
cities	O
in	O
fewer	O
clicks	O
by	O
solving	O
a	O
small	O
Minesweeper-like	O
puzzle	O
.	O
</s>
<s>
Searching	O
the	O
oasis	B-General_Concept
costs	O
turns	O
and	O
gives	O
no	O
immediate	O
value	O
,	O
but	O
it	O
boosts	O
the	O
player	O
's	O
score	O
and	O
leads	O
to	O
bonus	O
levels	O
,	O
which	O
often	O
result	O
in	O
a	O
free	O
glyph	B-Application
and	O
advisor	O
.	O
</s>
<s>
Oasis	B-General_Concept
took	O
eight	O
full-time	O
developers	B-Application
two	O
years	O
and	O
five	O
months	O
to	O
make	O
.	O
</s>
<s>
Oasis	B-General_Concept
received	O
largely	O
positive	O
reviews	O
from	O
the	O
gaming	O
press	O
,	O
received	O
awards	O
from	O
the	O
independent	O
gaming	O
community	O
and	O
has	O
been	O
ported	O
to	O
mobile	O
phone	O
by	O
Konami	O
.	O
</s>
<s>
In	O
July	O
2010	O
,	O
Electrified	O
Games	O
released	O
an	O
iPad	B-Device
version	O
of	O
Oasis	B-General_Concept
renamed	O
as	O
Defense	B-Application
of	I-Application
the	I-Application
Oasis	I-Application
to	O
avoid	O
confusion	O
with	O
the	O
English	O
rock	O
band	O
Oasis	B-General_Concept
.	O
</s>
<s>
Female	O
gamer	O
website	O
Grrl	O
Gamer	O
described	O
the	O
game	O
as	O
"	O
one	O
part	O
puzzle	O
and	O
one	O
part	O
strategy	O
"	O
,	O
Game	O
Tunnel	O
stated	O
"	O
Oasis	B-General_Concept
packs	O
a	O
very	O
powerful	O
punch	O
of	O
both	O
strategy	O
and	O
entertainment	O
"	O
.	O
</s>
<s>
Game	O
Daily	O
's	O
reviewer	O
disagreed	O
,	O
describing	O
Oasis	B-General_Concept
as	O
"	O
the	O
perfect	O
game	O
for	O
those	O
times	O
when	O
you	O
need	O
to	O
do	O
something	O
mindless	O
and	O
silly	O
"	O
and	O
that	O
there	O
is	O
no	O
need	O
to	O
plan	O
moves	O
before	O
taking	O
them	O
.	O
</s>
<s>
Website	O
Game	O
Tunnel	O
's	O
founder	O
Russell	O
Carroll	O
rated	O
the	O
game	O
10	O
out	O
of	O
10	O
overall	O
,	O
summing-up	O
the	O
review	O
by	O
stating	O
"	O
The	O
game	O
is	O
flawlessly	O
designed	O
to	O
create	O
a	O
wonderful	O
experience	O
in	O
strategy/world	O
-building	O
that	O
even	O
those	O
who	O
do	O
n't	O
really	O
get	O
into	O
the	O
genre	O
can	O
enjoy	O
"	O
and	O
"	O
Oasis	B-General_Concept
is	O
one	O
of	O
the	O
best	O
gaming	O
experiences	O
I	O
've	O
had	O
this	O
year	O
"	O
.	O
</s>
<s>
Although	O
he	O
noted	O
its	O
"	O
over-reliance	O
on	O
luck	O
"	O
,	O
he	O
nonetheless	O
found	O
that	O
it	O
"	O
offers	O
up	O
surprisingly	O
deep	O
and	O
interesting	O
strategy	O
"	O
,	O
and	O
argued	O
that	O
"	O
there	O
's	O
some	O
serious	O
fun	O
to	O
be	O
had	O
with	O
Oasis	B-General_Concept
"	O
.	O
</s>
<s>
Oasis	B-General_Concept
received	O
Game	O
Tunnel	O
's	O
2005	O
"	O
Game	O
of	O
the	O
Year	O
"	O
and	O
"	O
Strategy	O
Game	O
of	O
the	O
Year	O
"	O
awards	O
.	O
</s>
