<s>
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
is	O
a	O
strategy	B-Application
video	I-Application
game	I-Application
mod	O
for	O
the	O
video	O
game	O
Dota	B-Application
2	I-Application
.	O
</s>
<s>
Developed	O
by	O
Drodo	O
Studio	O
and	O
released	O
in	O
January	O
2019	O
,	O
the	O
game	O
features	O
elements	O
of	O
chess	B-Application
and	O
supports	O
up	O
to	O
eight	O
players	O
.	O
</s>
<s>
Later	O
in	O
2019	O
,	O
Drodo	O
Studio	O
developed	O
a	O
standalone	O
version	O
known	O
simply	O
as	O
Auto	O
Chess	B-Application
,	O
while	O
Valve	O
,	O
the	O
developer	O
of	O
Dota	B-Application
2	I-Application
,	O
developed	O
their	O
own	O
standalone	O
version	O
known	O
as	O
Dota	B-Application
Underlords	I-Application
.	O
</s>
<s>
This	O
elimination	O
style	O
game	O
features	O
elements	O
derived	O
from	O
chess	B-Application
and	O
Dota	B-Application
2	I-Application
.	O
</s>
<s>
Some	O
rounds	O
feature	O
players	O
battling	O
non-player	O
"	O
creeps	B-Protocol
"	O
,	O
rather	O
than	O
one	O
another	O
.	O
</s>
<s>
When	O
a	O
player	O
is	O
knocked	O
out	O
of	O
the	O
game	O
,	O
players	O
that	O
have	O
contributed	O
to	O
their	O
elimination	O
receive	O
gold	O
and/or	O
items	B-Application
.	O
</s>
<s>
During	O
the	O
preparation	O
phase	O
,	O
players	O
select	O
from	O
a	O
public	O
pool	O
of	O
over	O
fifty	O
chess	B-Application
pieces	O
based	O
on	O
Dota	B-Application
2	I-Application
characters	O
 '	O
personas	O
and	O
abilities	O
and	O
place	O
their	O
pieces	O
on	O
the	O
spaces	O
within	O
the	O
four	O
rows	O
on	O
their	O
side	O
of	O
the	O
board	O
.	O
</s>
<s>
Each	O
chess	B-Application
piece	O
belongs	O
to	O
a	O
class	O
and	O
at	O
least	O
one	O
particular	O
race	O
.	O
</s>
<s>
Players	O
may	O
acquire	O
items	B-Application
after	O
killing	O
the	O
creeps	B-Protocol
and	O
can	O
give	O
these	O
items	B-Application
to	O
their	O
chess	B-Application
pieces	O
.	O
</s>
<s>
Upon	O
a	O
successful	O
fight	O
during	O
every	O
tenth	O
round	O
,	O
the	O
creeps	B-Protocol
drop	O
a	O
relic	O
.	O
</s>
<s>
Relics	O
reward	O
players	O
with	O
"	O
neutral	O
items	B-Application
"	O
that	O
manipulate	O
the	O
normal	O
game	O
rules	O
in	O
their	O
favor	O
.	O
</s>
<s>
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
has	O
its	O
own	O
ranking	O
system	O
.	O
</s>
<s>
When	O
asked	O
about	O
the	O
inspiration	O
of	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
,	O
shortly	O
following	O
the	O
mod	O
's	O
release	O
,	O
Drodo	O
Studio	O
stated	O
that	O
they	O
drew	O
inspiration	O
from	O
the	O
Chinese	O
tile-based	O
game	O
Mahjong	B-Application
for	O
reference	O
.	O
</s>
<s>
Generally	O
played	O
by	O
four	O
people	O
,	O
the	O
objective	O
of	O
Mahjong	B-Application
is	O
to	O
spell	O
out	O
a	O
particular	O
combination	O
of	O
cards	O
through	O
a	O
series	O
of	O
replacement	O
and	O
trade-off	O
rules	O
while	O
preventing	O
opponents	O
from	O
achieving	O
their	O
own	O
combinations	O
.	O
</s>
<s>
While	O
drawing	O
inspiration	O
from	O
Mahjong	B-Application
,	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
made	O
changes	O
to	O
accommodate	O
the	O
battle-oriented	O
gameplay	O
.	O
</s>
<s>
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
was	O
released	O
by	O
Drodo	O
Studio	O
to	O
the	O
Steam	B-Application
Marketplace	O
on	O
January	O
4	O
,	O
2019	O
.	O
</s>
<s>
With	O
the	O
viral	O
surge	O
of	O
popularity	O
of	O
the	O
mod	O
,	O
Valve	O
,	O
the	O
developer	O
of	O
Dota	B-Application
2	I-Application
,	O
flew	O
Drodo	O
Studio	O
to	O
their	O
headquarters	O
,	O
to	O
discuss	O
recruiting	O
them	O
for	O
developing	O
a	O
standalone	O
version	O
of	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
.	O
</s>
<s>
On	O
June	O
1	O
,	O
2019	O
,	O
Valve	O
updated	O
a	O
monthly	O
paid	O
'	O
Auto	O
Chess	B-Application
Pass	O
 '	O
in	O
the	O
Dota	B-Application
2	I-Application
store	O
,	O
with	O
a	O
share	O
of	O
the	O
revenue	O
going	O
to	O
Drodo	O
Studio	O
.	O
</s>
<s>
A	O
standalone	O
Auto	O
Chess	B-Application
by	O
Drodo	O
Studio	O
was	O
released	O
on	O
Android	B-Application
on	O
April	O
18	O
,	O
2019	O
,	O
on	O
iOS	B-Application
on	O
May	O
22	O
,	O
2019	O
,	O
and	O
on	O
Windows	O
via	O
the	O
Epic	O
Games	O
Store	O
on	O
July	O
19	O
,	O
2019	O
,	O
and	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
on	O
December	O
16	O
,	O
2020	O
.	O
</s>
<s>
Drodo	O
Studio	O
stated	O
that	O
besides	O
the	O
development	O
of	O
Auto	O
Chess	B-Application
,	O
they	O
would	O
continue	O
to	O
upgrade	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
.	O
</s>
<s>
Several	O
publications	O
praised	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
for	O
its	O
creative	O
gameplay	O
rules	O
accessibility	O
.	O
</s>
<s>
VPEsports	O
noted	O
that	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
feels	O
like	O
a	O
very	O
strategic	O
game	O
:	O
"	O
It	O
's	O
a	O
strategy	B-Application
game	I-Application
,	O
with	O
a	O
feeling	O
of	O
a	O
turn-based	O
game	O
,	O
it	O
has	O
the	O
key	O
ingredients	O
of	O
card	O
games	O
and	O
it	O
requires	O
the	O
player	O
to	O
plan	O
ahead	O
while	O
being	O
rather	O
good	O
with	O
APM.	O
"	O
</s>
<s>
Game	O
Informer	O
offered	O
the	O
praise	O
that	O
"	O
It	O
's	O
not	O
chess	B-Application
,	O
and	O
it	O
's	O
not	O
Dota	O
,	O
but	O
it	O
's	O
a	O
great	O
game	O
to	O
queue	O
up	O
and	O
play	O
with	O
friends	O
or	O
solo.	O
"	O
</s>
<s>
PCGamesN	O
called	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
"	O
the	O
most	O
successful	O
third	O
party	O
Dota	O
custom	O
game	O
ever	O
"	O
.	O
</s>
<s>
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
is	O
often	O
compared	O
favorably	O
with	O
Valve	O
's	O
digital	B-Application
collectible	I-Application
card	I-Application
game	I-Application
,	O
Artifact	B-Application
,	O
with	O
a	O
number	O
of	O
publications	O
stating	O
that	O
despite	O
the	O
two	O
titles	O
being	O
released	O
in	O
close	O
proximity	O
,	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
has	O
proven	O
to	O
be	O
the	O
more	O
enduring	O
game	O
.	O
</s>
<s>
VentureBeat	O
tested	O
the	O
Drodo	O
Auto	O
Chess	B-Application
mobile	O
game	O
and	O
noted	O
that	O
players	O
who	O
had	O
n't	O
played	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
on	O
PC	O
might	O
feel	O
confused	O
of	O
figuring	O
out	O
the	O
information	O
of	O
the	O
unit	O
on	O
the	O
field	O
by	O
saying	O
"	O
Drodo	O
's	O
mobile	O
Auto	O
Chess	B-Application
is	O
a	O
significantly	O
better	O
way	O
to	O
play	O
the	O
original	O
great	O
mod	O
if	O
you	O
already	O
know	O
and	O
comprehend	O
the	O
original	O
game	O
,	O
and	O
for	O
that	O
,	O
it	O
should	O
be	O
a	O
success	O
.	O
</s>
<s>
But	O
it	O
feels	O
like	O
a	O
perhaps	O
smaller-scale	O
version	O
of	O
Auto	O
Chess	B-Application
,	O
one	O
designed	O
around	O
the	O
small	O
screen	O
both	O
visually	O
and	O
as	O
a	O
game	O
,	O
might	O
be	O
the	O
one	O
to	O
take	O
over	O
the	O
world	O
like	O
previous	O
mods	O
have.	O
"	O
</s>
<s>
The	O
popularity	O
of	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
quickly	O
inspired	O
a	O
whole	O
host	O
of	O
games	O
with	O
the	O
creation	O
of	O
the	O
auto	O
battler	O
subgenre	O
.	O
</s>
<s>
In	O
China	O
,	O
there	O
was	O
a	O
reported	O
eight	O
companies	O
having	O
registered	O
the	O
"	O
Auto	O
Chess	B-Application
"	O
trademark	O
in	O
January	O
2019	O
.	O
</s>
<s>
After	O
failing	O
to	O
reach	O
an	O
agreement	O
with	O
Valve	O
,	O
Drodo	O
Studio	O
partnered	O
with	O
Chinese	O
production	O
company	O
Imba	O
TV	O
and	O
Long	O
Mobile	O
to	O
develop	O
a	O
standalone	O
mobile	O
version	O
of	O
the	O
game	O
called	O
Auto	O
Chess	B-Application
.	O
</s>
<s>
Announced	O
on	O
March	O
15	O
,	O
2019	O
,	O
Auto	O
Chess	B-Application
removed	O
Dota	O
elements	O
from	O
the	O
property	O
and	O
features	O
its	O
own	O
separate	O
setting	O
.	O
</s>
<s>
With	O
Valve	O
's	O
direct	O
technical	O
support	O
,	O
Dota	B-Operating_System
Auto	I-Operating_System
Chess	I-Operating_System
players	O
are	O
capable	O
of	O
migrating	O
accounts	O
to	O
the	O
mobile	O
version	O
to	O
receive	O
rewards	O
.	O
</s>
<s>
In	O
June	O
2019	O
,	O
game	O
developer	O
Riot	O
Games	O
announced	O
that	O
League	B-Application
of	I-Application
Legends	I-Application
would	O
feature	O
an	O
auto	O
battler	O
of	O
their	O
own	O
,	O
known	O
as	O
Teamfight	B-Application
Tactics	I-Application
.	O
</s>
<s>
That	O
same	O
month	O
,	O
Valve	O
's	O
standalone	O
version	O
of	O
the	O
game	O
,	O
Dota	B-Application
Underlords	I-Application
,	O
was	O
released	O
in	O
early	O
access	O
for	O
PC	O
and	O
mobile	O
platforms	O
.	O
</s>
<s>
A	O
version	O
based	O
on	O
Hearthstone	B-Application
by	O
Blizzard	O
Entertainment	O
,	O
titled	O
Hearthstone	B-Application
Battlegrounds	I-Application
,	O
was	O
also	O
developed	O
.	O
</s>
