<s>
QuizUp	B-Application
is	O
a	O
discontinued	O
mobile	B-Application
game	I-Application
originally	O
developed	O
and	O
published	O
by	O
Iceland-based	O
Plain	O
Vanilla	O
Games	O
and	O
later	O
operated	O
by	O
Glu	O
Mobile	O
.	O
</s>
<s>
QuizUp	B-Application
was	O
a	O
multiplayer	O
game	O
where	O
one	O
user	O
competes	O
against	O
another	O
in	O
seven	O
rounds	O
of	O
timed	O
multiple-choice	O
questions	O
of	O
various	O
topics	O
.	O
</s>
<s>
QuizUp	B-Application
was	O
initially	O
released	O
for	O
iOS	B-Application
in	O
November	O
2013	O
.	O
</s>
<s>
Plain	O
Vanilla	O
Games	O
released	O
an	O
Android	B-Application
version	O
in	O
March	O
2014	O
.	O
</s>
<s>
As	O
of	O
May	O
2014	O
,	O
QuizUp	B-Application
had	O
20	O
million	O
users	O
and	O
had	O
raised	O
over	O
$26	O
million	O
from	O
venture	O
capital	O
investments	O
.	O
</s>
<s>
In	O
September	O
2016	O
,	O
as	O
a	O
result	O
of	O
NBC	O
cancelling	O
their	O
show	O
,	O
QuizUps	B-Application
creator	O
,	O
Plain	O
Vanilla	O
,	O
laid	O
off	O
all	O
of	O
their	O
employees	O
and	O
announced	O
a	O
plan	O
to	O
sell	O
the	O
app	O
before	O
the	O
end	O
of	O
2016	O
.	O
</s>
<s>
QuizUp	B-Application
was	O
acquired	O
by	O
mobile	B-Application
game	I-Application
developer	O
Glu	O
Mobile	O
for	O
$7.5	O
million	O
USD	O
,	O
and	O
the	O
phrase	O
"	O
[	O
QuizUp	B-Application
is ]	O
alive	O
and	O
kicking	O
"	O
was	O
relayed	O
to	O
its	O
community	O
of	O
players	O
through	O
the	O
separate	O
topic	O
QuizUp	B-Application
:	O
Feedback	O
as	O
well	O
as	O
through	O
social	O
media	O
.	O
</s>
<s>
On	O
20	O
January	O
2021	O
,	O
QuizUp	B-Application
was	O
removed	O
from	O
the	O
App	B-Application
Store	I-Application
,	O
and	O
on	O
21	O
January	O
2021	O
,	O
it	O
was	O
announced	O
on	O
the	O
QuizUp	B-Application
app	O
that	O
the	O
game	O
was	O
being	O
discontinued	O
on	O
22	O
March	O
2021	O
.	O
</s>
<s>
On	O
24	O
March	O
2021	O
,	O
QuizUps	B-Application
servers	O
were	O
taken	O
offline	O
and	O
the	O
application	O
and	O
web	O
service	O
became	O
inaccessible	O
,	O
after	O
several	O
hours	O
of	O
delay	O
.	O
</s>
<s>
Users	O
had	O
the	O
option	O
of	O
signing	O
into	O
the	O
app	O
through	O
a	O
social	O
media	O
platform	O
such	O
as	O
Facebook	B-Application
,	O
Twitter	B-Application
,	O
or	O
Google+	B-Application
which	O
allowed	O
the	O
user	O
to	O
see	O
current	O
friends	O
who	O
are	O
using	O
the	O
app	O
,	O
invite	O
friends	O
to	O
join	O
them	O
on	O
the	O
app	O
,	O
or	O
challenge	O
their	O
friends	O
to	O
a	O
game	O
.	O
</s>
<s>
Users	O
also	O
could	O
choose	O
to	O
sign	O
into	O
QuizUp	B-Application
with	O
an	O
email	O
address	O
and	O
not	O
connect	O
with	O
a	O
social	O
media	O
site	O
.	O
</s>
