<s>
Gemsweeper	B-Application
is	O
a	O
thinking	O
puzzle	O
casual	O
game	O
developed	O
by	O
German	O
studio	O
Lobstersoft	O
.	O
</s>
<s>
In	O
Gemsweeper	B-Application
the	O
player	O
assumes	O
the	O
role	O
of	O
a	O
treasure	O
hunter	O
.	O
</s>
<s>
Gemsweeper	B-Application
features	O
an	O
interactive	O
tutorial	O
to	O
teach	O
the	O
player	O
the	O
basic	O
principle	O
of	O
nonogram	O
logic	O
puzzles	O
.	O
</s>
