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Proto:Sonic Robo Blast 2/March 2000 Prototype

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This is a sub-page of Proto:Sonic Robo Blast 2.

Hmmm...
To do:
Document some general/texture changes and all of the levels after THZ1.

In August 2023, a Sonic Doom 2 developer, Saxman, gave SSNTails several files he had sent to him back in 2000, including the SRB2XMAS.WAD file for 0.90, and notably the full source code and maps for SRB2 around this time, all dated March 2000. This prototype is similar to a mix of Christmas Test 0.92 and Christmas Test 0.93 in terms of the engine, however it contains earlier versions of the game's maps than any other known release. All of the maps are contained in their own separate WAD files, as this made it much easier to work on the levels.

If you want to download the prototype, a link to the source code and binaries can be found here.

General

  • Gameplay-wise, this prototype resembles Christmas 0.93.
  • Unlike most other versions of SRB2, this version requires a copy of DOOM2.WAD.
    • Both SRB2.WAD and TEST2.WAD must be loaded before you start the game, as they contain many required assets, sprites, and textures.
  • The counters on the HUD use the same font they did in Halloween and before.
  • The lives counter is missing.
March 2000 Christmas 0.93
SRB2 Mar2000 HUD.png Srb2 Christmas93 HUD.png
  • In SRB2.WAD, a full set of older Sonic sprites is found, however these are never used because TEST2.WAD overrides them on startup.

However, these can be restored by removing the new set of sprites from TEST2.WAD. When these sprites are used, Sonic will almost always use different variations of his death sprite and his jump sprite.

SRB2 Mar2000 OldSonicRestored.gif

  • The menus are the same as Christmas 0.93's, but they use the graphics from the Halloween tech demo.
    • As the "Time Attack" option was not present in Halloween, it has a unique graphic not seen anywhere else. Time Attack was a planned mode for SRB2 that wouldn't be publicly available until 1.09.4, 6 years after this prototype.

SRB2 Mar2000 TimeAttackOption.png

Graphics/Textures

  • The picture used for the title screen is entirely different compared to any version released after this, resembling the version used the Halloween tech demo without the "HALLOWEEN" text.
Halloween Tech Demo March 2000 Demo 1
SRB2 Halloween TITLEPIC.png SRB2 Mar2000 TITLEPIC.png SRB2 demo1 titlescreen.png
  • This version uses the iteration of GFZROCK seen in several prerelease videos and screenshots, most notably the SAGE 2000 Trailer.
March 2000 Demo 1-v2.1
SRB2 OldGFZRock.png SRB2 GFZRock.png
  • The THZRIP and THZPIPE textures are not present.
  • Deep Sea Zone only has two textures in this build.
    • The first one is a rock texture, taken directly from the Games Factory version.
    • The second one is a recolored version of THZROCK in this build. It goes completely unused.

SRB2 Mar2000 DSZ1.png SRB2 Mar2000 DSZ2.png

Levels

Greenflower Zone Act 1

This version's GFZ is mostly the same as the version found in Christmas 0.93, with a few differences.

  • The fan found near the beginning of the level is replaced with a Crawla.
  • The spring next to it is missing.
March 2000 Christmas 0.93
SRB2 Mar2000 GFZ1 1.png SRB2 Christmas93 GFZ1 1.png

Greenflower Zone Act 2

This iteration of GFZ2 is notably completely different than in Demo 2, as this version of GFZ2 was merged into GFZ1 sometime in mid-2000.

It much better resembles the second half of GFZ1 from Demo 1, but with lots of differences.

  • The level is noticably scaled up. When it was merged into GFZ1, everything was made smaller.
  • There are four monitors here, meant as a quick way of testing their effects. In this build, most of the shields placed here are nonfunctional, aside from the basic blue shield.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 1.png SRB2 Demo1 GFZ1 1.png
  • The rings and one of the crawlas on the platform is missing.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 2.png SRB2 Demo1 GFZ1 2.png
  • A fake wall was removed, making the secret tunnel more obvious.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 3.png SRB2 Demo1 GFZ1 3.png
  • The two bridges are missing. Many of these changes involve a lack of FOFs (floor over floor), which would be implemented into SRB2 starting with Demo 1.
  • Due to an issue with placing objects above ground over a pool of water, the water is missing.
  • This section has three blocks here (also seen in SAGE 2000 material of GFZ1) instead of the bridge seen in later versions.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 4.png SRB2 Demo1 GFZ1 4.png
  • One of the platforms is greatly extended and features many more flowers than in later versions.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 5.png SRB2 Demo1 GFZ1 5.png
  • This ledge is much higher in this version of the level, requiring you to jump up the steps in front of it to get over.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 6.png SRB2 Demo1 GFZ1 6.png
  • The 1-Up box is missing.
  • The four rings behind it are on the ground.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 7.png SRB2 Demo1 GFZ1 7.png
  • The platforms leading to the spring are placed differently.
  • The platforms also use rock and grass textures instead of the block textures.
  • The spring is missing.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 8.png SRB2 Demo1 GFZ1 8.png
  • The ledge with the 10 ring box is missing.
  • The flowers on the platform leading to it are all over the platform instead of only near the Magnet Shield monitor.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 9.png SRB2 Demo1 GFZ1 9.png
  • The line of 3 rings was moved closer towards the exit.
  • The end of the level was moved to the right.
March 2000 Demo 1
SRB2 Mar2000 GFZ2 10.png SRB2 Demo1 GFZ1 10.png


Greenflower Zone Act 3

  • There's no water and no Eggman yet.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 GFZ3 1.png SRB2 Demo2 GFZ3 1.png

Techno Hill Zone Act 1

  • The skybox is the same as Greenflower's.
  • This version of the level contains no Steam Flowers.
  • The glass barrier and spring at the start is replaced with an elevator.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 1.png SRB2 Demo2 THZ1 1.png
  • The start of the level contains an entrance to a maze not seen in the Demo 2 version.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 2.png SRB2 Demo2 THZ1 2.png
  • Strangely, this maze contains no objects and no reward for completing it.

SRB2 Mar2000 THZ1 3.pngSRB2 Mar2000 THZ1 4.png

  • A crusher was removed.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 5.png SRB2 Demo2 THZ1 3.png
  • The water level is lower.
  • There are two platforms to the sides of the bridge.
  • The two platforms are floors instead of FOFs.
  • The four rings in the air are on the ground.
  • An extra lift is present incase the player falls into the hazardous water.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 6.png SRB2 Demo2 THZ1 4.png
  • The water level is lower.
  • There are two lifts to the sides of the bridge.
  • The bridge is a floor instead of a FOF.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 7.png SRB2 Demo2 THZ1 5.png
  • This 25-ring box is replaced with the entrance to another maze.
March 2000 Demo 2/"Beta Quest"
SRB2 Mar2000 THZ1 8.png SRB2 Demo2 THZ1 6.png
  • Unlike the last one, though - it contains an emerald token.

SRB2 Mar2000 THZ1 9.png

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