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SRB2Kart title screen

Sonic Robo Blast 2 Kart (usually shortened to SRB2Kart or SRB2K) is a source code modification for Version 2.1 made by the Kart Krew team. Originally based on the Mario Kart mode of SRB2 Riders, it is a kart racing game with Sonic-themed characters, items and race tracks. SRB2Kart features over 100 maps for two game modes: the main Race mode and a Battle mode where players fight each other using the items available in the game. Despite Version 2.2 being out, SRB2Kart is still supported by Kart Krew, the Message Board, and the Master Server. Future releases are still planned.

Current release information

Gameplay and content

The gameplay resembles the Mario Kart series, with the ability to drift and getting boosts from drifts, throwing items forwards or backwards, and starting boosts. However, handling and physics are not the same as any of those games. Among differences, there is the ability to "slip-tide" (by turning inwards after a drift boost), the ability to "drop dash" (by holding the Accelerate key when respawning), dragged items can slow you down (but can't be stolen), 3 drift levels (Blue is a weak boost, Red is a strong boost, and Rainbow is a much longer lasting strong boost but takes more time to get than others), water skipping (bouncing on water up to two times if you have enough speed; but may not apply in some tracks), among other techniques.

As of the current release, Single Player only offers a Record Attack mode where you race with staff ghosts - including yours if you raced there before - and get medals from completing a race under certain times: Silver medals which are from decent times, and Gold medals which tend to be the toughest as well as being cleared by the top staff ghost from the track. Getting certain amounts of medals or playing a set number of races can unlock you extra cups, as well as a Hard game mode speed, and some extra things. Note that Record Attack mode can't be played if in a cheated game or if any major add-ons (ones that affect previously-loaded content, like a level replacement or a character with a script) are loaded.

The principal feature of SRB2Kart is Multiplayer, which can be offline with any add-ons you want, or online through LAN or Internet with support up to 16 players. Split-screen mode is supported both online and offline modes, with up to four players on each client. If an online server requires certain add-ons, the game will download and load them prior to a join request, if the server allows file downloading.


Items are provided by item boxes, which are littered across the track or battle arena. There are various different items which can be obtained:

  • Sneakers: These sneakers can give the user a boost of speed which allows them to cross over offroad sections with relative ease, or to quickly recover from crashing. Comes in single and trio varieties, as well as the Rocket Sneakers (only usable in Race modes) which gives unlimited Sneaker usage for a period of time. In Battle modes, hitting someone with a Sneaker charge steals a bumper from them!
  • Bananas: A staple of any kart racer, these bananas can be laid out on the track to slip up other racers. Comes in single, trio and 10 times varieties.
  • Orbinauts: Spiraling spike balls for protection, which can be fired ahead or behind to hit others, and can bounce off of walls. Comes in single, trio and quadro varieties.
  • Jawz: A shark-like missile with homing capabilities. Comes in single and double varieties.
  • Invincibility: You can do anything! Not even offroad can stop you!
  • Hyudoros: A ghost which likes to steal other players' items, while giving you intangibility for a short while.
  • Grow: Get bigger and stronger for a short while, allowing you to run over other racers!
  • Shrink: A Race mode exclusive item, this shrinks everyone in front of you and forces them to drop their items.
  • Ballhogs: Fires 5 bombs ahead of you in a spread pattern, which can bounce.
  • Pogo Springs: A Battle mode exclusive item, this causes you to jump high into the air. But make sure there's solid ground where you land! Or another player, so you can steal a bumper from them as you bounce off their head!
  • Kitchen Sinks: An item which, when used, instantly kills and respawns the target when hit, while announcing it to everyone. This item is very, very rare, and doesn't show in the normal roulette.
  • Eggman Monitors: It's a fake! Picking up this monitor after it's placed will cause you to drop your current item and starts a countdown before you explode. You can trigger the explosion early, though, to hit others in the blast.
  • Mines: Sets off an explosion after a period of time. They are also motion activated, so they will go off if someone gets too close to them.
  • Self-Propelled Bombs: Or SPBs for short. These bombs can only appear in Race modes and will target first place. However, perfect play can keep the SPB away!
  • Thunder Shields: A shield which automatically forms in Race modes, which sends out a thunderclap when triggered.


See also: SRB2Kart/Character WAD
See also: SRB2Kart/Chart of characters

SRB2Kart features 5 base characters, as well as an additional 30 in the optional bonuschars.kart addon. Characters are balanced according to two stats, with values between 1 and 9: speed and weight. A high speed value gives the character a high top speed, but at the expense of worse acceleration. A high weight makes it easier for the character to push other players around, but at the expense of worse handling when drifting. Faster and lighter characters build up drift boosts more slowly compared to a slower and heavier character.

Base characters

Character Icon Speed Weight
Sonic Ch sonic want.png 8 2
Tails Ch tails want.png 2 2
Knuckles Ch knuckles want.png 5 5
Dr. Eggman Ch Eggman want.png 2 8
Metal Sonic Ch metal want.png 8 8

Bonus characters

Character Icon Speed Weight
Flicky KFLKWANT.png 9 1
Motobug MOTOWANT.png 1 5
Amy Ch amy want.png 5 2
Mighty KGTYWANT.png 5 8
Ray Ch ray want.png 2 5
Espio Ch espio want.png 6 6
Vector VECTWANT.png 7 7
Chao Ch chao want.png 1 1
E-102 Gamma Ch gamma want.png 1 9
Chaos Zero Ch chaoszero want.png 3 9
Shadow Ch shadow want.png v1.0.2–v1.1: 8
v1.0.0–v1.0.1: 7
v1.0.2–v1.1: 5
v1.0.0–v1.0.1: 4
Rouge Ch rogue want.png v1.0.4–v1.1: 5
v1.0.2–v1.0.3: 2
v1.0.0–v1.0.1: 4
v1.0.4–v1.1: 3
v1.0.2–v1.0.3: 5
v1.0.0–v1.0.1: 3
Hero Chao Ch herochao want.png 2 1
Dark Chao Ch darkchao want.png 1 2
Cream Ch cream want.png 4 1
E-123 Omega Ch omega want.png 9 9
Blaze BLAZWANT.png 7 3
Silver Ch silver want.png 3 4
Wonder Boy Ch wonder want.png v1.0.2–v1.1: 4
v1.0.0–v1.0.1: 5
v1.0.2–v1.1: 7
v1.0.0–v1.0.1: 8
Arle ARLEWANT.png 4 3
NiGHTS Ch NiGHTS want.png 7 v1.1: 4
v1.0.0–v1.0.4: 1
Sakura Shinguji Ch sakura want.png 5 4
Ulala Ch ulala want.png 3 3
Beat Ch beat want.png 5 6
Vyse Ch vyse want.png 8 7
Aiai AIAIWANT.png 7 6
Kiryu Kazuma Ch kiryu want.png 6 7
Aigis Ch aigis want.png v1.0.2–v1.1: 6
v1.0.0–v1.0.1: 9
v1.0.2–v1.1: 4
v1.0.0–v1.0.1: 1
Hatsune Miku MIKUWANT.png 3 6
Doomguy Ch doomguy want.png 6 8


Main article: SRB2Kart/Levels

Currently, there are 108 levels in SRB2 Kart, consisting of 12 Race cups with 5 tracks per cup for a total of 60 Race tracks (of which 3 cups/15 tracks are unlockable), 29 Battle arenas, 15 Map Hell Race tracks, 3 Map Hell Battle arenas and the Podium Evaluation map (which will be used in a future update).

Editing features

Thing types


Linedef flags

  • Linedef flag 15: Invert Encore Remap – Inverts the effects of the Encore Remap if an Encore Palette has been made. With FOFs, this needs to be set on the linedefs in the map, instead of the ones on the control sector.

Linedef types

  • Linedef type 328: Encore Load – A type of linedef executor trigger which activates any linedef executor within its control sector immediately after the level loads in encore mode. This linedef executor only triggers once, and will not trigger again until the level is reloaded. The tag given to this linedef is irrelevant.
  • Linedef type 413: Change Music – Has the same functionality, but checking the Peg Midtexture flag hides the music credit which shows whenever a new song plays.

Sector types

  • Sector type 2: Offroad (Weak) – Slows the player down slightly unless they are under the effect of a speed boost.
  • Sector type 3: Offroad – Slows the player down moderately unless they are under the effect of a speed boost.
  • Sector type 4: Offroad (Strong) – Slows the player down greatly unless they are under the effect of a speed boost.
  • Sector type 12: Wall Sector
  • Sector type 112: Trigger Linedef Executor (Race Lap) – Activates the tagged trigger linedef on a certain lap of a race. The lap to use is based off of the player with the lowest current lap, unless Solid Midtexture is checked, in which case the lap of the player that enters the sector is used instead. By default the trigger linedef will activate if the used lap is equal to the front sidedef's x offset with an offset of 1 representing the second lap. If the No Climb or Block Enemies flag is checked on the trigger linedef then the used lap must be greater than or equal or less than or equal to the front sidedef's x offset, respectively.
  • Sector type 192: Invert Encore Remap – Inverts the effects of the Encore Remap if an Encore Palette has been made. Normally, everything is remapped barring Spring Panels and Sneaker Panels.
  • Sector type 256: Spring Panel – Makes the player bounce forward after touching the sector like a spring, keeping any previous momentum or speed (or giving some if you didn't have too much speed).
  • Sector type 768: Spring Panel (Speed Capped) – Makes the player bounce forward after touching the sector like a spring, but caps your speed to a certain amount during the jump instead of keeping it.
  • Sector type 24576: Sneaker Panel – A boost panel, gives the player a speed boost upon contact.
  • Sector type 40960: Circuit Finish Line – Marks the completion of a lap after crossing all checkpoints before it. Note that it can be used as a Section completion marker in case your track is a one-way/section race (laps used as sections).

Level header parameters


Default setting: false

This parameter is used to indicate if a track is a sprint race where there's a defined end. If this is set to true, then the number of 'laps' which the player would have to do will be no more than the NumLaps value given.


Default setting: FRACUNIT

This parameter is used to set the scale of all Objects in the map, in multiples of FRACUNIT.

Example: MobjScale = FRACUNIT/2 would scale all Objects in the map to half of its current size.


Default setting: (none)

Replaces "Zone" with the title on this parameter, unless the NoZone parameter is set to true, in which case it won't display at all. The zone title is limited to 21 characters; if it is longer, a warning will be displayed and the name will be truncated to fit.

List of music

Other features


This article or section contains a spoiler, an unlockable, or a secret. Please leave the page if you do not wish to view spoilers.

With the exception of Hell Attack, all unlockables can be unlocked either by collecting a certain number of medals or playing a certain number of matches.

Unlockable Description Needed medals Needed matches
Egg Cup Unlocks the Egg Cup maps (Kodachrome Void, Boiling Bedrock, Egg Quarters, Virtual Highway and Eggman's Nightclub) for Record Attack and Multiplayer. 5 medals 25 matches
Chao Cup Unlocks the Chao Cup maps (KKR Ganbare Dochu 2, CK Chao Circuit 1, CK Chao Circuit 2, CK Cloud Tops 2, CK Regal Raceway) for Record Attack and Multiplayer. 15 medals 50 matches
SMK Cup Unlocks the SMK Cup maps (SMK Donut Plains 1, SMK Mario Circuit 2, SMK Ghost Valley 2, SMK Bowser Castle 3, SMK Vanilla Lake 2) for Record Attack and Multiplayer. 30 medals 150 matches
Hard Game Speed Unlocks the Hard Game Speed option for use in Multiplayer. 50 medals 200 matches
Encore Mode Unlocks Encore Mode, which mirrors the tracks and may provide a complete palette remap of them, for use in Multiplayer. 70 medals 300 matches
Hell Attack Unlocks the ability to Record Attack the Map Hell maps. 110 medals
Spoilers end here.

See also

  Modifications [view]
v2.1 Acid MissileDumbventureMystic RealmSRB2KartSUGOISUBARASHIIKIMOKAWAIIITortured Planet
v2.0 Botanic SerenitySRB2CBSRB2 RidersXSRB2
v1.09.4 Blue HeavenShufflarB2SRB2JTE
v1.08 SA-SRB2SPMoves