[Overlord]

So I was randomly messing about with Micro Machines 2 a few days ago and wondered if I could figure out how to change the playable tracks on Time Trial mode. Having no clue where to start, I IM'd Tweaker who noted if I had an AR patch he'd be able to find the ROM point. After arming myself with the relevant tools, I found by pure luck the right address (noting it was only changing when I switched between levels on the selection screen), fired it his way and he sent back a bit later the ROM address. I investigated a bit further, mapped out things and whipped up a utility that I completed on Sunday - I've been deliberately saving it for today, as I've posted hacking utilities at Xmas before. =P I did intend to post it when I got back from the Xmas Eve celebrations last night but, uh, I kinda got a bit drunk and wasn't in a state to post anything. ;PEnough babble, to the details!

Overlord said:

FFE09A:xxxx loads up the relevant track, a partial list follows from the time trial mode1: 09 Roller Coaster2: 05 Tiny Treehouse3: 22 Ferry Fiasco4: 24 Basement Bumps5: 04 Whine On!6: 31 Chainsaw Chase!7: 1e Garage Games8: 0f Water Chase9: 2a Turbo Turns10: 13 Pool Slalom11: 27 Bathtub Burnoff12: 1b Dervish Danger13: 0e Frosty Reception14: 02 Pinball Panic15: 2e Bricks N Trees16: 34 Banked Oval17: 0c Ups N Downs18: 12 Ball Chase19: 17 Musical Hits20: 03 Step On It21: 1d Crossing Chaos22: 2f Vice Squad23: 2c Steam Struggle24: 28 Rim Runners25: 01 Treehouse Tiles26: 0d Garden Jumps27: 30 Driller KillerThanks to Tweaker's help, the above list can be seen if you go to 0x3E6AE in the ROM.Here's my assembled list of all the tracks:ID: Name Vehicle Rank Level Type Notes00: Raining Champ 4x4 Pro Treehouse Rain effect01: Treehouse Tiles 4x4 Pro Treehouse02: Pinball Panic Formula 1 Pro Pinball03: Step On It Convertible Pro DIY04: Whine On! Dumper Truck Midi Mayhem Dinner Table05: Tiny Treehouse 4x4 Short Spin Treehouse06: Plate Hop Supercar Midi Mayhem Kitchen Units07: Windy Willows 4x4 Pro Treehouse Wind blows you off course08: Cob Challenge Dumper Truck Short Spin Dinner Table09: Roller Coaster Convertible Pro DIY0A: Jelly Jitters Dumper Truck Midi Mayhem Dinner Table0B: ATV Action ATV Midi Mayhem Garden0C: Ups N Downs Convertible Pro DIY0D: Garden Jumps ATV Midi Mayhem Garden0E: Frosty Reception ATV Pro Garden0F: Water Chase Hovercraft Midi Mayhem Garden (Water)10: Training Camp ATV Short Spin Garden First level from Challenge - simple loop11: Pro Hovercraft Hovercraft Pro Garden Garbled tiles - unplayable. Not originally a circuit?12: Ball Chase Sportscar Pro Pool Table Table is green13: Pool Slalom Sportscar Mini Micro Pool Table Table is green14: Cue Capers Sportscar Midi Mayhem Pool Table Table is blue15: Ball Bonanza Sportscar Pro Pool Table Table is pink16: Piano Panic Monster Truck Midi Mayhem Music Room17: Musical Hits Monster Truck Pro Music Room Glockenspiel plays Twinkle Twinkle Little Star18: In A Spin Monster Truck Pro Music Room Record plays Beethoven's "Pour Elise" as you drive on it19: Sand Castles Beach Buggy Short Spin Beach1A: Bury My Body Beach Buggy Midi Mayhem Beach1B: Dervish Danger Beach Buggy Pro Beach1C: Picnic Problems Beach Buggy Pro Beach1D: Crossing Chaos Bug Pro Toy Cars1E: Garage Games Bug Mini Micro Toy Cars1F: Turbo Blast Bug Turbo Pro Toy Cars20: ***UNUSED*** Convertible Short Spin Car Crushing On being selected, crashes the ROM21: Toaster Trouble Supercar Pro Kitchen Units22: Ferry Fiasco Supercar Pro Kitchen Units23: Lights Out! Off Roader Pro Basement24: Basement Bumps Off Roader Midi Mayhem Basement25: Ceiling Circuits Off Roader Midi Mayhem Basement26: Attic Antics Off Roader Turbo Basement27: Bathtub Burnoff Dragster Turbo Bathroom28: Rim Runners Dragster Midi Mayhem Bathroom29: Pinball Pursuit Formula 1 Short Spin Pinball2A: Turbo Turns Convertible Turbo Pro DIY2B: Rapid Results Power Boat Midio Mayhem Stream Downstream version of 2C2C: Steam Struggle Power Boat Midio Mayhem Stream Upstream version of 2B2D: Pipe Patience Chopper Pro Basement2E: Bricks N Trees Chopper Pro Treehouse2F: Vice Squad Rally Car Short Spin Workshop30: Driller Killer Rally Car Short Spin Workshop31: Chainsaw Chase! Rally Car Midi Mayhem Workshop32: Tag Game 1 Sportscar Tag Pool Table is green, Car is a mini-sized bug33: Tag Game 2 Convertible Tag ? Level is corrupt. Car is helicopter without blades or rising/falling 34: Banked Oval Beach Buggy Turbo Beach35: ***UNUSED*** Convertible Short Spin Car Crushing Garbled graphics on layer A. Layer B rapidly scrolling grass from treetop levels36: ***UNUSED*** Convertible Short Spin Car Crushing Same as 35. Car for both is helicopter without blades or rising/falling37: 3 WINS BONUS! Crusher Treehouse Constantly scrolling up and car off-course disappearing - probably not designed for laps38: 3 WINS BONUS! Crusher Beach Lets you drive a short distance, then the truck disappears as if off-course, then does same as 3739: 3 WINS BONUS! Crusher Treehouse Same behaviour as 373A: 3 WINS BONUS! Crusher Beach Same behaviour as 38, only a different starting position3B: 3 WINS BONUS! Crusher Beach Same as 3A3C to 40: Music fades out like a normal level start, then just stays on a black screen with no player control. In level select themselves, crashes the ROM.41 onwards: Untested, I assume the same as previous

Here's a shot of the screen the unused tracks use, by the way - it's the same default image the 3 Win Bonus tracks do. It is worth noting that this particular combination of screen and text is never seen in normal play.Oh, right, the utility. I made a hacking tool that will let you put whatever levels you want in the Time Trial mode, including ones that would never normally be there - though I have limited it to tracks that work and don't crash the game. =PClean ROMClick! (Be sure to extract both files)

[Phugolz]

that's pretty fucking cool overlord. I used to love Micro Machines on NES. Never played any of the others.