This Game was built using the Headcannon Game Engine, and can be installed directly from the HCGE "Downloads" interface
Download here to install manually by placing the contents into the HCGE program folder
 
Download

This Game was built using the Headcannon Game Engine, and can be installed directly from the HCGE "Downloads" interface

Download here to install manually by placing the contents into the HCGE program folder
Levels
Below is a list of planned levels for Project Mettrix. These levels and their content are subject to change at any given time throughout development.

Shining Island Zone
The Tornado has been shot down from the sky, sending Sonic and Tails crashing down onto the seaside of a small island. Filled with tropical flowers and less then hospitable wildlife, they must progress through the grassy hilltops and beware of the new dangers that await them.




 
 
Aqualung Zone
Sonic and Tails have been washed away into an abandoned water purification plant. The dangerous machinery and confined areas make underwater exploration even more difficult then ever before.  Use the speed boosters on the catwalks to escape the dangers just in time!
 
Nightlight Heights Zone
Escaping the wet confines of the Aqualung, Sonic and Tails find themselves on mountain tops while continuing their chase of Dr. Eggman.  The dizzying heights of the range will offer challenges for our fast-footed hedgehog.
 
Neo Skychase Zone
Dr. Eggman has escaped once again! This time he's taken to the skies, headed for Angel Island. Thankfully, Sonic is able to use a spare Eggmobile to give chase.  Avoid dangerous flying obstacles and blast any badnik that gets in your way with the Eggmobiles destructive laser cannon.
 
Zoom Tubes Zone
Deep within Angel Island, Dr Eggman discovers the Zoom Tubes, a complex network of chutes that lead from one place to another below Angel Island.  Now Eggman is using them to confuse Sonic and Tails in hopes of leading them off course.
 
Hidden Palace Zone
Dr. Eggman has reached the Hidden Palace and is now looking for the Master Emerald. Barred by dangerous dinosaur robots and dive-bombing bats, Sonic and Tails must be quick to dodge these badniks and get to Eggman before it's too late!
 
Timeless City Zone
Beyond the Hidden Palace lies the ancient ruins of a forgotten echidna city. This labyrinth of stone and marble serves to only slow Sonic and Tails down. Where has Dr. Eggman gone? 
 
Egg Fortress
Beyond the ruins lies a monstrous fortress. No doubt Dr. Eggman is behind this abomination. Whatever he's up to must lie beyond this wall of security.
 
Mettrix
Dr. Eggman's newest creation is revealed! Does Sonic have what it takes to stop this powerful weapon?
 
Guardian Castle Zone
Knuckles discovers that his island has been invaded by Eggrobos!  In the distance he sees three golden guardian robots that block his path. Dodge deadly lasers and navigate through a castle maze to find and defeat each one.
 
Dust Hill Zone
As Knuckles chases down the leader of this invading army, he is led into the deserts of Angel Island. The blazing heat, sticky quicksand and dangerous flora and fauna will make this chase even more tricky for him.
 
Bronze Lake Zone
Beyond the desert lies a mysterious oasis filled with life and action.  The dangers Knuckles will find here are NOT what he expected...
 
Power Source Zone
After Sonic runs off after Eggman, it's up to Knuckles and Tails to take out the rest of his defenses and make sure he doesn't have a backup plan in store.
Music
In this section, you'll be able to listen to music that either is, or was at one point planned to be used in this game.  At this point, the project has had two composers, each creating/having had created a different soundtrack for the game.  The composer's name is listed at the top of each listing.  Musics no longer intended for use with Project Mettrix remain the property of the composer, and are not to be used without his permission

All songs are to be converted to .XM for the final game.  Because the particular soundcard or softsynth used to play these MIDIS can vary in sound, they may not necessarily reflect the sound of the music in-game

The Andre Schroder version was originally converted to .wav for in-game use by Wingroove, an old wavetable synthesizer program.   Newer songs had been converted with Yamaha XG synthesis

(Andre Schroder versions)
 siz.mid - Shining Island Zone 
aqua.mid - Aqualung Zone 
nitelite.mid - Nightlight Heights Zone 
mtitle.mid - Title screen 
minvinc.mid - Invincibility 
mspeed.mid - Speed shoes 
mgover.mid - Game Over 
mcontinue.mid - Continue 
wood-options.mid - Wood Zone the "Options Zone" 
Gc.mid - Guardian Castle Zone 
Timeless.mid - Timeless City Zone 
mboss1.mid - Miniboss 
mcomplete.mid - Level Complete Fanfare 
Mettrix.mid - Mettrix Zone 
Powers.mid - Power Source Zone 
Dusthill.mid - Dust Hill Zone 
Steelfrt.mid - Steel Fortress Zone 
BLake.mid - Bronze Lake Zone (Formerly Rust Yard Zone) 
mbonus.mid - "Obsolete" 2D special stage. Will probably be scrapped. 
mspecial.mid - Special Stage (Under reconsideration)

(Verse versions)
 v-siz.mid - Shining Island Zone 
v-alz.mid - AquaLung Zone

(Canned music)
 nozone.mid - Cutscene music (Cut-scenes were removed)
Timeless-Old.mid - Timeless City Zone (New music was made for this zone.) 
mboss2.mid - Zone Boss (Just doesnt sound right..)
Machine.mid - The Machine (Zone Dropped, It's design would have been too similar to Mettrix Zone, and it's name had already been used.) 
7ract2.mid - Shining Island Zone 2 (Was just remix of GG Sonic 2 Green Hills)
(note: only listed because you cant get it anywhere else)
Mettrix Engine for Sonic Development
Project Mettrix is built using my own Headcannon Game Engine.  As HCGE is designed for total versatility, all Sonic the Hedgehog aspects of this game are created entirely through scripting.  Much of the core Sonic scripting that makes up this game is available for editing as part of the HCGE Sonic Example Game, and can be used to create other games with unique levels, enemies, powerups, menus, displays, and even other characters and character abilities
Older Versions
This section is a listing of older HCGE (previously known as "E02") Project Mettrix builds and engine tests
To obtain the newest version of the game, please see the Download section at the top of the page

Download E02 Project Mettrix Demo V8 11.2megs

Download E02 New Engine Demo V7 6.55megs

 Download E02 New Engine Test V6 5.25megs

 Download E02 New Engine Test V5 3.44megs

 Download E02 New Engine Test V4 2.74megs
   Sonic 1 Music set 5.39megs
   (Compliments E02 test v4, unzip into same folder)
   Sonic 1 Sound Effect set 310kb
   (Compliments E02 test v4, unzip into same folder)

 Download E02 New Engine Test V3 2.58megs
   Sonic 1 Music set 5.39megs
   (Compliments E02 test v3, unzip into same folder)
   Sonic 1 Sound Effect set 310kb
   (Compliments E02 test v3, unzip into same folder)

 Download E02 New Engine Test V2 905kb
   Sonic 1 Music set 5.39megs
   (Compliments E02 test v2, unzip into same folder)
   Sonic 1 Sound Effect set 310kb
   (Compliments E02 test v2, unzip into same folder)

 Download E02 New Engine Test V1 2.08megs
Old E01 Versions
This section is a listing of much older Project Mettrix builds, running under the engine back-dubbed as "E01"

Download Demo 4.1 Full Version 2.64megs    (Core files, includes unfinished content)
   Download Demo 4.1 Full Music set 9.83megs
   (All current game music)
   Download Demo 4.1 Full Sound Effect Set 437kb
   (All current sound effects)
   Download Demo 4.1 to 4.2 Windows compatibility Update Patch 369kb
   (Requires Demo 4.1, use this if 4.1 Windows version does not run)

 Download Demo 4 "Lite" 5.36megs
   (unfinished content omitted for smaller download)
   Download Demo 4 to 4.1 "CrashFix" Update Patch 1.11megs
   (Requires Demo 4 "Lite", fixes crashes and adds SpritRip)

 Download Pre-Demo 4 Test 7 "Lite" 4.5megs
   (unfinished content omitted for smaller download)

Download the old Demo 3 9.5megs
   Download the Demo 3.1 Upgrade Patch 614K
   (Requires Full Demo 3 Downloaded first)

Download the old Demo 2 3.2megs

Download the old Demo 1 3.2megs

What's New.txt (Updates to each new version)
ReadMe.txt (Setup and Gameplay instructions)
ReadMeLE.txt (Introduction to the Level Editing series of Documentation)

Download DOS4GW (Required for DOS, Place in X:\Windows\ Directory) 143KB
Download VDMSound (Required for DOS if running Win2K or XP. Read instructions thoroughly) 978KB
E01 Official Addons
Note: These add-ons were created long ago for the old E01 Project Mettrix, and are presented for interest's sake. They are not compatible with HCGE

Below is a list of official addons created by myself or other members of the team. You may download them by clicking on their image. Most of these addons are addon performance tests and tributes to other works, but are likely still enjoyable in one way or another. Any works here based on others are so noted, as are any original works strictly by the staff. Please do not request more works based on SEGA originals than are already listed here. For legal reasons, those requests will be ignored, and any future SEGA-based works will be of my choosing and will be listed ONLY when I feel they are warranted and safe for distribution.

If you would like to create your own levels to use with Project Mettrix, please view the file ReadMeLE.txt and the other editing documentation files, or the editing portion of the Windows help file, which are all included with the game, for instructions on using the level editor and playing external levels. Have fun!

Sonic 1
Author: Stealth/Sonic Team
Read Me File Gameplay Video (Knuckles) Gameplay Video (Tails)
E01 Fan Addons
Note: These add-ons were created long ago for the old E01 Project Mettrix, and are presented for interest's sake. They are not compatible with HCGE

Below is a list of user-created levels that have been sent to me. You may download them by clicking on their image. If you would like to create your own levels to use with Project Mettrix, please view the file ReadMeLE.txt and the other editing documentation files, or the editing portion of the Windows help file, which are all included with the game, for instructions on using the level editor and playing external levels. Have fun!
[Keep in mind that formats change, but I'm doing my best to ensure that older files work with newer versions of the game. Object placement files (.itm) from demo 3.1 and below are not compatible with newer versions because of a large change in the object system, but most future releases shouldn't change so drastically. Level and Tile files (.lev, .til) from any older version are compatible with all newer versions, and should remain so. They are automatically converted to the new format when loaded. All addon files included in the archive are meant for the newest release and will not work with older releases.]

Magma Caves
Author: BlazeSJ1
Read Me File
 
Shining Island Timezones
Author: Seth the wolfox (a66seth(at)aol(dot)com)
Read Me File
 
Quartz Mines
Author: Dark Stalkey (darkstalkey(at)hotmail(dot)com)
Read Me File
 
Nightlight Heights Redesign
Author: Dark Stalkey (darkstalkey(at)hotmail(dot)com)
Read Me File
 
Scrap Brain Remake
Author: MYoshiH (MyoshiH(at)aol(dot)com)
Read Me File
 
Bonuses
Author: Anthony (grapes(at)flashmail(dot)com)
Read Me File
 
Swamp Hill
Author: Knux02 (eggman(at)jet2web(dot)cc)
Read Me File