<s>
Quadrax	B-Application
is	O
a	O
Slovak	O
video	O
game	O
series	O
of	O
freeware	O
games	O
by	O
Cauldron	O
,	O
commencing	O
with	O
Quadrax	B-Application
in	O
1995	O
.	O
</s>
<s>
It	O
was	O
a	O
remake	O
of	O
the	O
1994	O
game	O
created	O
by	O
programmers	O
David	O
Durčák	O
and	O
Marian	O
Ferko	O
for	O
ZX	B-Operating_System
Spectrum	I-Operating_System
.	O
</s>
<s>
Meanwhile	O
,	O
Quadrax	B-Application
III	O
would	O
become	O
the	O
first	O
public	O
successor	O
in	O
2000	O
.	O
</s>
<s>
Bonusweb.cz	O
felt	O
that	O
Quadrax	B-Application
belonged	O
in	O
the	O
tradition	O
of	O
puzzle	O
games	O
alongside	O
The	B-Application
Humans	I-Application
and	O
Lemmings	B-Application
.	O
</s>
<s>
Bonusweb.cz	O
said	O
Quadrax	B-Application
IV	O
is	O
a	O
cool	O
project	O
and	O
that	O
it	O
does	O
not	O
disappoint	O
.	O
</s>
<s>
Bonusweb.cz	O
said	O
that	O
Quadrax	B-Application
VIII	O
is	O
the	O
most	O
difficult	O
game	O
of	O
all	O
time	O
.	O
</s>
<s>
Bonusweb.cz	O
felt	O
that	O
Quadrax	B-Application
X	O
raised	O
the	O
bar	O
of	O
difficulty	O
from	O
the	O
previous	O
entries	O
.	O
</s>
