The flow of time

Many thanks to those who fielded my questions about Saturn Reverse engineering. I managed to take control of the Flash Sega Saturn Vol. 25 demo. The procedure is described in the next article.

Going through this exercise has given us a a new snapshot of Burning Rangers development to examine! It's got some unique features, but it's otherwise pretty close to Burning Rangers Taikenban, which was described in the last article.

Since we're now able to thoroughly examine all of the known prerelease builds of BR, this article will compare and contrast them. Here is the lineup:

You are welcome and encouraged to put this information (including the screenshots) on Sega Retro or The Cutting Room Floor. It will save me the trouble!

Tutorial space

The tutorial space is missing entirely from Dec 1. Unfinished versions of it appear in both FSS25 and Taikenban. A mostly-finished version appears in Jan 3.

The main difference between the two unfinished versions is the survivor at the end: it's Danny Ortiz in FSS25 and Richard Wells in Taikenban.

One noticeable difference between the later versions is also the survivor at the end. It's a featureless dummy in Jan 3 and a more realistic one in Final. In addition, Final has a training sequence for the "press down to jump away from a backdraft" move.

Tutorial rescue: FSS25

Tutorial rescue: Taikenban

Tutorial rescue: Jan 3

Tutorial rescue: Final

Mission 1

Mission 1 is close to complete in all of the prereleases. There are various differences across builds in survivor and object placement, but they're pretty minor. There are a few differences in the map that are unique to Dec 1. The boss encounter is similar in all builds.

One noticeable map difference: there is a room off the Lv. 08 North Transit hallway in the Dec 1 build that's not there in later builds. Also, the big room with the reactor in its center (Maztabaluxor Lv. 8) is different in Dec 1; you don't enter it at the ground level.

Dec 1 also has red arrows and signs on floors and walls that point you in the right direction. These are (mostly) gone in later builds — presumably because you're meant to rely on voice navigation data.

Dec 1 has a little trap in Supply Room 03rd that isn't there in other versions. Once you're in it, a shutter behind the entrance closes. You have to jump up through a hole in the floor and go around to the door on the upper level. FSS25 has something else that's unique in the same place: inside the room is a robot and some fuel canisters. When you approach the fuel canisters, they explode, taking the robot down in the process (video).

Dec 1 and FSS25 have yellow fuel canisters in Workshop D103-08 A. These act like the  blue ones, and are replaced with blue ones in later builds. Their object data remains on the final disc, but they're not used anywhere.

Dec 1 has a "burning sun" enemy on the Lv. 99 South Transit path (just after you turn on the lights for a second time). That remains in FSS25 and Taikenban, but is gone in Jan 3 and Final. These enemies appear in different parts of Mission 1 when you're doing replays, but they're never on the main path.

Lv. 08 North Transit: Dec 1

Lv. 08 North Transit: Jan 3

Waste Storage D102: Dec 1

Waste Storage D102: Taikenban

Supply Room 03rd: Dec 1

Supply Room 03rd: FSS25

Supply Room 03rd: Taikenban

Supply Room 03rd: Final

Workshop D103-08 A: Dec 1

Workshop D103-08 A: Jan 3

Lv. 99 South Transit: Dec 1

Lv. 99 South Transit: Jan 3

Mission 2

Mission 2 seems to have taken the longest to finish. The last section in particular is notably empty in every build before the final one.

The intro sequence differs in builds that have broken swimming. In FSS25 and Taikenban, Shou or Tillis sprint through the submerged tunnel. In the other  versions they swim properly.

Object and obstacle placement varies among versions. For example, the hallway after the Dolphin Tank has pink flames in some prerelease versions, pink flames and a robot in others, and orange flames with no robot in Final.

The dolphin interactions are hit or miss in the prototypes. They more or less work in Dec 1 and Jan 3. In FSS25 the Dolphin will fling you into a wall and prevent you from continuing (video). In Taikenban, the dolphin won't carry you out of its tank, which prevents you from continuing. 

Dec 1 has an entire section that's missing in later builds. After the dolphin tank is a fairly difficult maze of corridors on two levels. You need to find a switch to open a shutter to continue. There is a survivor hidden in one of the remote rooms.

There's another, less complicated, maze of hallways with red doors in Dec 1. Rolling fuel canisters are added to it in FSS25. The canisters are gone in Taikenban (they've moved to a different hallway), but are back in Jan 3. Both the red doors and the canisters are gone in the final.

In Dec 1, you encounter a very glitchy survivor that seems to be re-enacting the Peter Smith scene from Mission 1 (he's the one banging on the elevator door at the end of the first round). A similarly glitchy person is standing in the area labeled Grampus Path. The first person is gone in later builds, but the second is replaced by Leonard Kennedy in FSS25 and Taikenban. They're both gone by Jan 3.

There are some limited changes to the map across versions. After you swim through the tunnels with the dolphin, the prerelease versions put you in a room with two vents. The final version replaces the vents with an open shutter.

None of the prereleases have the animation that plays during the cut scene in the monitor room. Final shows a rotating wireframe model of Ocean Park during the dialog.

The boss encounter is unfinished in the prereleases. You can't access the boss area from the last room in Dec 1 or Taikenban, and you can't even get to the last room in FSS25. Final has a scripted segment at the beginning of the boss round, but that isn't implemented in the earlier builds — you can control your character on the way down to the boss's area.

The cutscene in which Shou or Tillis rejoin the other rangers after riding on the dolphin seems to have been a late addition; it's not there until Final.

Intro sequence: FSS25

Intro sequence: Jan 3 (multiplayer)

Dolphin Tank hallway: Taikenban

Dolphin Tank hallway: Final

Hallway maze before water channel: FSS25

Hallway maze before water channel: Final

Monitor room: Taikenban

Monitor room: Final

Grampus Path: Dec 1

Grampus Path: Taikenban

After following the Dolphin: Jan 3

After following the Dolphin: Final

Mission 3

Most of Mission 3 is nailed down as of Dec 1, but the Neal rescue sequence is missing until Final. There are a few minor object placement variations across builds.

Dec 1 and FSS25 are missing the elevator in Spring Valley Square. It's actually there, but you can't see it. Both of those have unfinished textures for the floors in the second round. There's a safety gate on the upper level of Frozen Bell Square in the prereleases, but it's gone in Final.

The bee enemies are green instead of yellow in the prereleases. They take more hits to defeat, as does the drill robot.

Dec 1, FSS25, and Taikenban have objects floating around in the second round. If you touch or shoot at them, they bounce around the room (video). This was presumably some sort of demonstration of the weak gravity on the space station, but it's in the part of that round where you can walk normally.

Stick Canyon Path is really interesting the prerelease builds. Behind each of the four doors is a different little challenge that gives you access to a switch. One room has an anti-gravity section and another lets you ride upward on the air current produced by a spinning fan (there are more details the Jan 3 article). These features definitely aren't there in Final.

The scene with Big and the deconstruction crew's foreman evolves over time. In Dec 1, neither big nor the foreman are there — a little girl appears instead. In the later builds they both show up, but the foreman has a different model and more primitive animations.

Dec 1 has the same little girl standing in the middle of Stick Canyon Path. She's replaced by a levitating Neal in FSS25 and Taikenban. Levitating Neal has moved into the next room as of Jan 3. His cutscene isn't implemented until Final.

The boss's difficult is dialed up in all the prerelease versions: you have to knock off all its armor before you can deal any damage.

Spring Valley Square: Dec 1

Spring Valley Square: Final

Frozen Bell Square: Dec 1

Frozen Bell Square: Dec 1

Stick Canyon Path: Dec 1

Stick Canyon Path: Taikenban

Stick Canyon Path: Jan 3

Stick Canyon Path: Final

Switch hallway: Jan 3

Switch hallway: Final

Heading to the escape pod: Jan 3

Heading to the escape pod: Final

Mission 4

Mission 4 is present in Dec 1, but the last round crashes right after you enter it. It's playable in the rest of prerelease builds, but none of them have fully functional boss fights only Jan 3 even allows access to the final boss round.

The opening section is really difficult in Dec 1! The spotlight enemies are constantly bombarding you with flames, and there are pairs of "burning sun" enemies blocking your path at multiple points. The difficulty is dialed down a bit in FSS25 and Taikenban , but the same enemies are present. The extra enemies are gone in Jan 3. The prerelease builds are missing the switch that lets you into the ice room; instead there's a mostly-invisible block that you can ride up to its entrance.

The prerelease versions of the water section are more or less the same as in Final. All the prerelease versions are tedious because of the unfinished swimming controls. You can't use the elevator to finish this section in FSS25 or Taikenban, so you have to skip ahead.

Dec 1 has different visuals in the background in the third section — it's the same image, but the positioning is wrong. FSS25 and Taikenban are interesting; they've got the Burning Ship docked next to the platform (video). The spotlight enemies are hanging around, too. Once you get to the top, all the prerelease versions have a broken version of the floating crystal boss — it doesn't fight back at all.

None of the prerelease versions have you play the Burning Ship sub-game before proceeding. A very unfinished version of it is present in Jan 3 (here is a video).

Round four can only really be explored with the debug camera in Dec 1. The cyclops monster that protects Iria's room is missing in the prerelease versions, but FSS25 has a pair of "burning sun" enemies there instead (video). Iria's hypersleep unit is present in Dec 1 and FSS25, but it's gone in Taikenban and Jan 3. The cutscene with the other Rangers doesn't appear until Final.

FSS25 and Jan 3 let you proceed past Iria's room into a chamber with a strange fuel canister elevator. Jan 3 has a partial version of the final boss. Its globe form plays about the same, but its last form is missing all but one of its attack types.

Mission 4 start: FSS25

Mission 4 start: Final

Before the ice room: FSS25

Before the ice room: Final

Before the crystal boss: Taikenban

Before the crystal boss: Final

Outside Iria's room: FSS25

Outside Iria's room: Final

Iria's room: FSS25

Iria's room: Taikenban

Before the final boss: FSS25

Before the final boss: Final

General differences

Tillis's loading screen: Dec 1

Tillis's loading screen: FSS25

Chris's loading screen: Dec 1

Loading screen: Taikenban