A debug display is on screen at all times, this includes FPS, time the game has been running, memory, version and build date. An additional "Object Cam" infobox is displayed during race introductions.
Four debug options are available on the main menu. All Cheats unlocks everything and the Intro Anim and Final Anim options play the intro and ending cinematics.
Soak Test starts a self playing game with more debug info displayed; number of games run, track, event and time the game has been running in Soak Test.
An extra "Off Screen Mask" option can be found in the options, which renders a yellow border over the game.
The pause menu has a "Cheat Win" option that does exactly what it says, though it is somewhat prone to crashing the game. It is currently unknown what "Line Mode" is or if it works, as selecting it seems to just un-pause the game.
A free camera mode can be activated during gameplay, demo mode or the Soak Test by pressing Right or Left (only after the race has started) on the D-pad. Pressing Left again returns the camera to normal. The analog stick is used to angle the camera while the face buttons are used to move in any given direction.
General Differences
No VMU notifications on startup.
Saving doesn't seem to be implemented yet, though the game does prompt you to save.
The audio file for the theme song has a slight bit of silence at the start, which causes the music to be out of sync with the intro animation.
It is possible to start a multiplayer game without a second player.
The Mini Championship Mode is missing the turbo pickups.
The default best times in Mini Championship Mode are all identical placeholders.
The color for player 1 is blue instead of red (i.e. the arrow representing the player on the minimap).
It is possible to pause the game in the middle of the pre-race countdown, while in the final game one has to wait for the word "GO" to completely fade off the screen.
The audio has a chance of glitching out the longer the game has been played, with error messages popping up when the game starts having trouble playing sounds.
It is possible to pick Gridiron as the track for Rally Days #1 in multiplayer, but this causes the game to crash as soon as the race starts. In the final game, Gridiron is only available in "Ass Battle".
In Multiplayer, the HUD shows who has the lead.
Prototype
Final
The the race timer in Mini Championship Mode was changed from blue to an easier to read orange. The item boxes on the HUD were also removed since Mini Championship features no items.
Prototype
Final
In the prototype, the Mini Championship Mode ends at Stage 7 (Mountains) instead of Stage 8 (Volcano)
Prototype
Final
Menus
No copyright on title screen.
Prototype
Final
The Best Times option is missing in the prototype. Also note how the bottom and top text were adjusted.
Prototype
Final
The default controls were different and the menu refers to Pick Ups as Action Items instead.
Prototype
Final
The Pick Ups on/off and VMU Sounds options are missing in the prototype, while the Off Screen Mask option was removed from the final game.
Prototype
Final
The question mark model is different in the prototype. Also note that Scuzzlebutt, Ms. Carman and Mrs. Broflovski are missing but would be added in the May 24, 2000 build.
Prototype
Final
The multiplayer character select included was organized differently. It also includes the "Random Every Race" option, which isn't applicable to the mode (it also appears in the Arcade mode as well).
Prototype
Final
The remaining credits are displayed differently. Also note "Pause Menu P1" instead of simply "Paused".
Prototype
Final
Instead of showing the name of the next track in Mini Championship Mode, the prototype instead shows the name of the event associated with the track.
Prototype
Final
The Carnival track didn't have it's preview yet. Additionally, Gridiron was listed before Carnival in the track select.
Prototype
Final
Hints
All of the hint screens are slightly different from their final counterparts, with ever so slightly different formatting and a drop shadow. There are a few more notable changes, though.
Has an extra "to".
Prototype
Final
Has an extra "of".
Prototype
Final
Formatted differently, with the "an" moved to the next line.
Prototype
Final
Mackey was misspelled as Macky.
Prototype
Final
Was missing an "and".
Prototype
Final
Has an extra "or".
Prototype
Final
Refers to a handbrake key instead of button.
Prototype
Final
The rather redundant "making driving difficult" line was removed from the final version.
Prototype
Final
Has an extra "over".
Prototype
Final
Track Differences
Big Gay Al's
The poles holding the banner at the starting line are untextured.
The minimap for Big Gay Al's still has the hidden path behind the ice skater picture, which was changed into a small hidden area in the Dreamcast port.
Prototype
Final
Mountain
The poles holding the banner seem to be using the same texture as the banner in the prototype.
Volcano
The background is oriented differently.
Prototype
Final
Gridiron
The starting point is different. "Pickups" was changed to "Pick Ups" for the final version.
Prototype
Final
Carnival
The Dreamcast exclusive Carnival track is missing several static and interactive props (i.e. cows). It also lacks any turbo pickups in any mode and regular item boxes when played in Arcade Mode or Multiplayer.
The bull pen fence uses a different texture and is missing the pole and the decorations around it.
Prototype
Final
The uh, butt shaped fixtures emit blue smoke in a different shape instead of yellow. The last two fixtures don't emit anything at all.
Prototype
Final
Referencing the season 2 episode Cow Days, the ball toss stall originally had an image of Jennifer Love Hewitt. This was replaced with an image of Frida from the episode Chickenpox, presumably for legal reasons.
Prototype
Final
Ice Cream trailers and other stalls and decorations are missing throughout the track.
Prototype
Final
Prototype
Final
Prototype
Final
Prototype
Final
Prototype
Final
The Ferris wheel was positioned lower in the prototype.
Prototype
Final
The fire effect was not yet implemented, though hitting it still burns your car to a crisp!
Prototype
Final
Prototype
Final
Event Changes
Some changes were made to the starting positions of the "pucks" for each event.
Rally Days #2
Carnival
Prototype
Final
Cow Days
Carnival
Prototype
Final
Valentine's Day
Carnival
Prototype
Final
Spring Cleaning
City
Prototype
Final
Farm
Prototype
Final
Big Gay Al's
Prototype
Final
Sewer
Prototype
Final
Mountain
Prototype
Final
Volcano
Prototype
Final
Carnival
Prototype
Final
Read-a-Book Day/Easter/Halloween/Thanksgiving
Carnival
Instead of being spread throughout the track, many of the objects are bunched just behind the starting line.
Prototype
Final
Memorial Day
Carnival
Prototype
Final
Christmas
Carnival
Prototype
Final
Millennium New Year's Eve
Forest
Prototype
Final
Carnival
Prototype
Final
Ending
The ending is unfinished, with missing music, characters and misplaced objects.