<s>
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
is	O
a	O
puzzle-platform	O
game	O
developed	O
by	O
Tomas	O
Sakalauskas	O
and	O
published	O
by	O
Curve	O
Digital	O
.	O
</s>
<s>
It	O
was	O
initially	O
released	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
macOS	B-Application
,	O
and	O
Linux	B-Application
in	O
July	O
2016	O
,	O
and	O
received	O
ports	O
for	O
PlayStation	B-Operating_System
4	I-Operating_System
,	O
PlayStation	B-Device
5	I-Device
,	O
Xbox	B-Device
One	I-Device
,	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
,	O
Nintendo	B-Application
Switch	I-Application
,	O
Google	B-Application
Stadia	I-Application
,	O
and	O
iOS	B-Application
and	O
Android	B-Application
over	O
the	O
next	O
several	O
years	O
.	O
</s>
<s>
The	O
game	O
has	O
sold	O
more	O
than	O
30	O
million	O
copies	O
as	O
of	O
July	O
2021	O
,	O
making	O
it	O
one	O
of	O
the	O
best	B-Application
selling	I-Application
video	I-Application
games	I-Application
of	I-Application
all-time	I-Application
.	O
</s>
<s>
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
is	O
a	O
physics	O
puzzle	O
game	O
where	O
players	O
play	O
a	O
customizable	O
human	O
,	O
referred	O
to	O
in-game	O
as	O
Bob	O
.	O
</s>
<s>
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
was	O
developed	O
by	O
Tomas	O
Sakalauskas	O
.	O
</s>
<s>
Initially	O
Sakalauskas	O
concentrated	O
on	O
making	O
mobile	B-Application
games	I-Application
although	O
he	O
ran	O
out	O
of	O
money	O
partway	O
through	O
;	O
this	O
,	O
combined	O
with	O
him	O
questioning	O
the	O
ethics	O
of	O
the	O
freemium	O
model	O
of	O
most	O
mobile	B-Application
games	I-Application
,	O
led	O
him	O
instead	O
to	O
turn	O
development	O
towards	O
a	O
PC	O
game	O
.	O
</s>
<s>
Sakalauskas	O
has	O
stated	O
that	O
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
was	O
his	O
"	O
last	O
shot	O
at	O
gaming	O
"	O
.	O
</s>
<s>
The	O
game	O
began	O
life	O
as	O
a	O
prototype	O
for	O
Intel	O
's	O
RealSense	B-Algorithm
motion	O
sensing	O
camera	O
.	O
</s>
<s>
Sakalauskas	O
set	O
out	O
to	O
make	O
the	O
game	O
in	O
the	O
vein	O
of	O
a	O
puzzle	O
game	O
similar	O
to	O
Limbo	B-Application
or	O
Portal	B-Application
,	O
however	O
,	O
when	O
playtesting	O
the	O
game	O
with	O
his	O
son	O
Sakalauskas	O
noted	O
that	O
"	O
he	O
did	O
everything	O
possible	O
not	O
to	O
solve	O
puzzles	O
"	O
,	O
instead	O
just	O
having	O
fun	O
with	O
the	O
physics	O
engine	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
as	O
a	O
prototype	O
on	O
Itch.io	O
after	O
which	O
many	O
prominent	O
streamers	O
began	O
promoting	O
it	O
,	O
prompting	O
Sakalauskas	O
to	O
release	O
a	O
Steam	O
version	O
nine	O
months	O
later	O
.	O
</s>
<s>
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Xbox	B-Device
One	I-Device
versions	O
followed	O
in	O
May	O
2017	O
with	O
a	O
Nintendo	B-Application
Switch	I-Application
version	O
that	O
December	O
.	O
</s>
<s>
A	O
port	O
to	O
mobile	O
platforms	O
by	O
Codeglue	O
and	O
505	O
Games	O
supporting	O
iOS	B-Application
and	O
Android	B-Application
was	O
released	O
on	O
26	O
June	O
2019	O
.	O
</s>
<s>
A	O
Stadia	B-Application
port	O
by	O
Lab42	O
released	O
on	O
1	O
October	O
2020	O
,	O
followed	O
by	O
Xbox	B-Device
Series	I-Device
X/S	I-Device
and	O
PlayStation	B-Device
5	I-Device
versions	O
the	O
following	O
year	O
.	O
</s>
<s>
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
received	O
"	O
mixed	O
or	O
average	O
"	O
reviews	O
,	O
according	O
to	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
According	O
to	O
Curve	O
,	O
the	O
sales	O
of	O
the	O
game	O
were	O
boosted	O
with	O
the	O
addition	O
of	O
online	O
multiplayer	O
in	O
late	O
2017	O
;	O
by	O
early	O
January	O
2018	O
,	O
the	O
game	O
had	O
broken	O
over	O
1	O
million	O
units	O
sold	O
on	O
the	O
Windows	B-Application
version	O
,	O
but	O
within	O
a	O
month	O
,	O
had	O
seen	O
an	O
additional	O
700,000	O
sales	O
.	O
</s>
<s>
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
was	O
the	O
first	O
video	O
game	O
released	O
by	O
Super	O
Rare	O
Games	O
,	O
which	O
is	O
a	O
limited-print	O
company	O
that	O
physically	O
publishes	O
Nintendo	B-Application
Switch	I-Application
games	O
.	O
</s>
<s>
In	O
Japan	O
,	O
the	O
Nintendo	B-Application
Switch	I-Application
version	O
of	O
Human	B-Application
Fall	I-Application
Flat	I-Application
released	O
by	O
Teyon	O
Japan	O
,	O
a	O
subsidiary	O
of	O
Teyon	O
,	O
was	O
the	O
fourteenth	O
bestselling	O
game	O
during	O
its	O
first	O
week	O
of	O
release	O
,	O
with	O
5,241	O
copies	O
sold	O
.	O
</s>
<s>
As	O
of	O
July	O
2021	O
,	O
Human	B-Application
:	I-Application
Fall	I-Application
Flat	I-Application
had	O
sold	O
more	O
than	O
30	O
million	O
copies	O
.	O
</s>
