<s>
Sonic	B-Device
Extreme	I-Device
was	O
a	O
prototype	B-Application
video	O
game	O
created	O
by	O
Vision	B-Device
Scape	I-Device
Interactive	I-Device
in	O
May	O
2003	O
.	O
</s>
<s>
Proposed	O
as	O
a	O
spin-off	O
to	O
Sega	O
's	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
series	I-Application
,	O
Sonic	B-Device
Extreme	I-Device
featured	O
Sonic	B-Application
and	O
Shadow	B-Application
riding	O
hoverboards	O
in	O
a	O
Green	O
Hill	O
Zone-themed	O
open	O
world	O
,	O
with	O
gameplay	O
likened	O
to	O
Tony	B-Application
Hawk	I-Application
's	I-Application
Pro	I-Application
Skater	I-Application
.	O
</s>
<s>
Vision	O
Scape	O
created	O
the	O
prototype	B-Application
while	O
it	O
made	O
cutscenes	O
for	O
Sonic	B-Application
Heroes	I-Application
(	O
2003	O
)	O
;	O
it	O
was	O
developed	O
on	O
the	O
Xbox	B-Application
with	O
intent	O
to	O
port	O
it	O
to	O
the	O
GameCube	B-Application
and	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
prototype	B-Application
was	O
assembled	O
using	O
the	O
RenderWare	O
game	O
engine	O
and	O
assets	O
from	O
prior	O
Vision	O
Scape	O
and	O
Sonic	B-Application
games	O
.	O
</s>
<s>
Vision	O
Scape	O
showed	O
Sonic	B-Device
Extreme	I-Device
to	O
Sonic	B-Application
Team	O
head	O
Yuji	O
Naka	O
,	O
who	O
was	O
impressed	O
and	O
asked	O
for	O
a	O
software	O
design	O
description	O
to	O
be	O
submitted	O
to	O
Sega	O
.	O
</s>
<s>
While	O
the	O
game	O
never	O
came	O
to	O
fruition	O
,	O
it	O
may	O
have	O
served	O
as	O
the	O
basis	O
for	O
Sonic	B-Application
Team	O
's	O
Sonic	B-Application
Riders	I-Application
(	O
2006	O
)	O
,	O
which	O
features	O
similar	O
gameplay	O
concepts	O
.	O
</s>
<s>
The	O
Extreme	O
prototype	B-Application
publicly	O
surfaced	O
in	O
May	O
2011	O
,	O
when	O
gameplay	O
footage	O
was	O
uploaded	O
to	O
YouTube	B-General_Concept
.	I-General_Concept
</s>
<s>
Sonic	B-Device
Extreme	I-Device
was	O
an	O
extreme	O
sports	O
video	O
game	O
in	O
which	O
the	O
player	O
controlled	O
a	O
character	O
riding	O
a	O
hoverboard	O
.	O
</s>
<s>
It	O
could	O
have	O
featured	O
multiple	O
playable	O
characters	O
from	O
the	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
series	I-Application
,	O
but	O
the	O
prototype	B-Application
only	O
featured	O
Sonic	B-Application
and	O
Shadow	B-Application
.	O
</s>
<s>
Polygon	O
and	O
Digital	O
Trends	O
compared	O
its	O
gameplay	O
to	O
Tony	B-Application
Hawk	I-Application
’s	I-Application
Pro	I-Application
Skater	I-Application
:	O
the	O
player	O
was	O
placed	O
in	O
an	O
open	O
world	O
with	O
rings	O
,	O
crates	O
,	O
boost	O
pads	O
,	O
ramps	O
,	O
half-pipes	O
,	O
and	O
rails	O
,	O
and	O
could	O
perform	O
tricks	O
to	O
boost	O
their	O
score	O
.	O
</s>
<s>
The	O
prototype	B-Application
featured	O
three	O
game	O
modes	O
:	O
"	O
Mission	O
"	O
,	O
"	O
Combat	O
"	O
,	O
and	O
"	O
Race	O
"	O
.	O
</s>
<s>
Sonic	B-Device
Extreme	I-Device
was	O
developed	O
by	O
Vision	B-Device
Scape	I-Device
Interactive	I-Device
,	O
a	O
San	O
Diego-based	O
studio	O
known	O
for	O
its	O
work	O
on	O
the	O
shoot	O
'	O
em	O
up	O
SeaBlade	B-Application
for	O
the	O
Xbox	B-Application
and	O
the	O
skateboarding	O
game	O
Tech	O
Deck	O
:	O
Bare	O
Knuckle	O
Grind	O
for	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
first	O
attempt	O
was	O
with	O
a	O
game	O
based	O
on	O
the	O
American	O
animated	O
television	O
series	O
Rocket	O
Power	O
that	O
would	O
have	O
been	O
published	O
by	O
THQ	O
for	O
the	O
GameCube	B-Application
,	O
Xbox	B-Application
,	O
and	O
PlayStation	B-Device
2	I-Device
,	O
but	O
this	O
game	O
was	O
canceled	O
due	O
to	O
THQ	O
's	O
financial	O
problems	O
.	O
</s>
<s>
As	O
a	O
number	O
of	O
the	O
staff	O
had	O
backgrounds	O
in	O
animation	O
,	O
Sega	O
hired	O
Vision	O
Scape	O
to	O
produce	O
cutscenes	O
for	O
Sonic	B-Application
Team	O
's	O
game	O
Sonic	B-Application
Heroes	I-Application
(	O
2003	O
)	O
.	O
</s>
<s>
Vision	O
Scape	O
cofounder	O
Mark	O
McDonald	O
decided	O
to	O
pitch	O
a	O
spinoff	O
that	O
used	O
the	O
Bare	O
Knuckle	O
Grind	O
engine	O
with	O
the	O
Sonic	B-Application
intellectual	O
property	O
(	O
IP	O
)	O
.	O
</s>
<s>
The	O
prototype	B-Application
was	O
developed	O
over	O
the	O
course	O
of	O
a	O
week	O
in	O
May	O
2003	O
without	O
Sega	O
's	O
knowledge	O
.	O
</s>
<s>
It	O
was	O
created	O
on	O
the	O
Xbox	B-Application
because	O
of	O
Vision	O
Scape	O
's	O
experience	O
with	O
the	O
platform	O
,	O
with	O
intent	O
to	O
port	O
it	O
to	O
the	O
GameCube	B-Application
and	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
team	O
retooled	O
Bare	O
Knuckle	O
Grind	O
to	O
resemble	O
Sonic	B-Application
games	O
;	O
for	O
example	O
,	O
the	O
world	O
was	O
based	O
on	O
Green	O
Hill	O
Zone	O
and	O
included	O
traditional	O
Sonic	B-Application
elements	O
such	O
as	O
rings	O
and	O
boost	O
pads	O
.	O
</s>
<s>
Vision	O
Scape	O
's	O
deal	O
with	O
Sega	O
for	O
Sonic	B-Application
Heroes	I-Application
also	O
gave	O
them	O
access	O
to	O
assets	O
from	O
Sonic	B-Application
games	O
.	O
</s>
<s>
The	O
studio	O
took	O
models	O
of	O
Sonic	B-Application
and	O
Shadow	B-Application
and	O
repurposed	O
them	O
to	O
ride	O
the	O
hoverboards	O
.	O
</s>
<s>
Promotional	O
artwork	O
from	O
Sonic	B-Application
Adventure	I-Application
and	O
Sonic	B-Application
Adventure	I-Application
2	I-Application
was	O
used	O
for	O
the	O
loading	O
and	O
title	O
screens	O
.	O
</s>
<s>
Sounds	O
and	O
music	O
were	O
ripped	O
from	O
Sonic	B-Application
Adventure	I-Application
2	I-Application
.	O
</s>
<s>
McDonald	O
held	O
a	O
meeting	O
with	O
Sonic	B-Application
Team	O
head	O
Yuji	O
Naka	O
and	O
showed	O
him	O
the	O
prototype	B-Application
.	O
</s>
<s>
According	O
to	O
McDonald	O
,	O
Naka	O
was	O
impressed	O
and	O
enthusiastic	O
,	O
and	O
said	O
the	O
project	O
would	O
move	O
forward	O
as	O
a	O
collaboration	O
between	O
Sonic	B-Application
Team	O
and	O
Vision	O
Scape	O
.	O
</s>
<s>
At	O
Naka	O
's	O
request	O
,	O
Vision	O
Scape	O
produced	O
a	O
software	O
design	O
description	O
for	O
a	O
full	O
Sonic	B-Device
Extreme	I-Device
and	O
its	O
budget	O
;	O
the	O
studio	O
management	O
believed	O
they	O
had	O
secured	O
the	O
deal	O
.	O
</s>
<s>
However	O
,	O
Sega	O
did	O
not	O
respond	O
to	O
Vision	O
Scape	O
and	O
ended	O
its	O
communications	O
with	O
the	O
studio	O
after	O
it	O
completed	O
the	O
Sonic	B-Application
Heroes	I-Application
cutscenes	O
,	O
despite	O
repeated	O
attempts	O
by	O
Vision	O
Scape	O
's	O
agent	O
for	O
correspondence	O
.	O
</s>
<s>
Ultimately	O
,	O
Sonic	B-Device
Extreme	I-Device
never	O
came	O
to	O
fruition	O
.	O
</s>
<s>
In	O
September	O
2005	O
,	O
Sega	O
announced	O
Sonic	B-Application
Riders	I-Application
,	O
a	O
new	O
Sonic	B-Application
game	O
developed	O
by	O
Sonic	B-Application
Team	O
.	O
</s>
<s>
Vision	O
Scape	O
staff	O
were	O
stunned	O
by	O
the	O
resemblances	O
Sonic	B-Application
Riders	I-Application
bore	O
to	O
Sonic	B-Device
Extreme	I-Device
,	O
with	O
characters	O
riding	O
hoverboards	O
and	O
performing	O
tricks	O
through	O
worlds	O
inspired	O
by	O
past	O
Sonic	B-Application
games	O
.	O
</s>
<s>
Video	O
game	O
historian	O
Liam	O
Robertson	O
noted	O
that	O
,	O
in	O
addition	O
to	O
the	O
hoverboarding	O
,	O
Sonic	B-Device
Extremes	I-Device
game	O
modes	O
were	O
present	O
in	O
Sonic	B-Application
Riders	I-Application
,	O
although	O
heavily	O
modified	O
.	O
</s>
<s>
McDonald	O
believed	O
that	O
Sonic	B-Application
Team	O
took	O
Vision	O
Scape	O
's	O
concept	O
before	O
going	O
in	O
a	O
different	O
direction	O
,	O
which	O
he	O
thinks	O
explains	O
Sega	O
's	O
silence	O
.	O
</s>
<s>
Vision	O
Scape	O
considered	O
taking	O
legal	O
action	O
,	O
but	O
McDonald	O
's	O
agent	O
informed	O
him	O
the	O
non-disclosure	O
agreement	O
the	O
studio	O
signed	O
during	O
the	O
Sonic	B-Application
Heroes	I-Application
development	O
gave	O
Sega	O
ownership	O
of	O
anything	O
they	O
made	O
using	O
a	O
Sega	O
IP	O
.	O
</s>
<s>
McDonald	O
ordered	O
the	O
staff	O
to	O
dispose	O
of	O
their	O
development	O
hardware	O
and	O
a	O
number	O
software	B-Application
development	I-Application
kits	I-Application
were	O
taken	O
to	O
a	O
recycling	O
plant	O
.	O
</s>
<s>
However	O
,	O
the	O
Sonic	B-Device
Extreme	I-Device
prototype	B-Application
survived	O
and	O
was	O
traded	O
between	O
collectors	O
.	O
</s>
<s>
Sonic	B-Device
Extreme	I-Device
was	O
publicly	O
revealed	O
in	O
May	O
2011	O
,	O
when	O
a	O
YouTube	B-General_Concept
user	O
,	O
"	O
ProtonX3	O
"	O
,	O
released	O
videos	O
demonstrating	O
the	O
environments	O
and	O
modes	O
.	O
</s>
<s>
Game	O
Informer	O
and	O
VG247	O
thought	O
Sonic	B-Device
Extreme	I-Device
looked	O
"	O
predictably	O
"	O
and	O
"	O
compellingly	O
"	O
awful	O
,	O
respectively	O
,	O
and	O
GamesRadar	O
joked	O
it	O
"prov[ed]	O
once	O
again	O
that	O
slapping	O
the	O
word	O
'	O
extreme	O
 '	O
onto	O
any	O
popular	O
franchise	O
,	O
activity	O
or	O
consumer	O
good	O
is	O
a	O
surefire	O
way	O
to	O
guarantee	O
that	O
it	O
will	O
be	O
anything	O
but.	O
"	O
</s>
<s>
The	O
game	O
also	O
elicited	O
commentary	O
on	O
Sega	O
's	O
quality	O
control	O
process	O
;	O
Game	O
Informer	O
and	O
Computer	O
and	O
Video	O
Games	O
expressed	O
relief	O
that	O
it	O
was	O
never	O
released	O
,	O
but	O
questioned	O
why	O
Sega	O
had	O
continued	O
to	O
release	O
other	O
poorly-received	O
Sonic	B-Application
games	O
,	O
such	O
as	O
Shadow	B-Application
the	I-Application
Hedgehog	I-Application
,	O
Sonic	B-Application
Riders	I-Application
and	O
its	O
sequels	O
,	O
and	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
(	O
2006	O
)	O
.	O
</s>
<s>
dedicated	O
an	O
episode	O
of	O
its	O
series	O
Unseen64	O
to	O
Sonic	B-Device
Extreme	I-Device
.	O
</s>
<s>
Former	O
members	O
of	O
Vision	O
Scape	O
,	O
including	O
McDonald	O
,	O
were	O
interviewed	O
for	O
the	O
video	O
,	O
while	O
research	O
was	O
provided	O
by	O
Andrew	O
Borman	O
,	O
a	O
video	O
game	O
preservationist	O
and	O
the	O
owner	O
of	O
the	O
prototype	B-Application
.	O
</s>
<s>
After	O
the	O
video	O
's	O
release	O
,	O
Engadget	B-Application
was	O
positive	O
,	O
saying	O
"	O
Extreme	O
looks	O
like	O
it	O
could	O
've	O
actually	O
been	O
a	O
lot	O
of	O
fun	O
"	O
and	O
favorably	O
compared	O
its	O
battle	O
mode	O
to	O
Mario	B-Application
Kart	I-Application
8s	I-Application
.	O
</s>
