Part 3: Hacking the Trials
-Biohazard 4 Trial Edition-
Debug Changes

Finally we can move on from the Resident Evil 4 Trial and onto the Biohazard 4 one. These next few pages will cover the Biohazard 4 Trial with the debug unlocked thanks to a method Mark and I found while messing around with various other versions of Resident Evil 4. I'd also like to thank Björn, our translator for helping out in this article. Without him, we'd just have tons of stuff that we would miss!


The first thing you'll notice is the lack of the Debug options on the title screen. Its unknown why this version does this but its likely because the title screen options were never programmed to be shown. The only thing you can do is start the game. Once you do however you'll notice that you will spawn at the Bridge point in the first map. This was set this way by Mark and I, as any other point in the game would cause the game to crash. Because the spawn point is slightly farther than the initial starting point some of the games earlier sequences and occurances will mess up, such as two ganados from the beginging remianing in place outside the first house. So with that, lets see what this new debug activated version has done to the games normal mechanics.


Starting inside the status menu, we'll see what has changed using the various options up top. Below you can see an image of the menu with the various options translated:


Two items here stand out, they are Communication and Option. Both of which are not in the final menu. Communication obviously refers to contacting Hunnigan. This option is of course removed from the final game but shows that Capcom was planning on adding in a MGS style system for contacting her. The Option was moved out and now pressing START brings it up in the final. So lets get down to it, what do these options do:

Equipment: Brings you right back to this menu, where you can adjust your items.

(Key) Item: Crashes the game, apparently its not programmed in this version.

Communication: Crashes the game as well. Not programmed.

Map: With the debug activated version the entire map is revealed:


File: The file menu is very much a WIP, with two files being available right from the start:


File 01

Playing manual
"Read this first"
1. Adjusting the aim
If you hold down the R trigger you can use the LEVER to aim freely.
2. Action button
With the button assigned to this you can perform various actions.
3. Camera adjustment
If you wiggle the c-stick you can adjust the camera.
4. Binoculars
Leon has binoculars, you can press Z to use them at any time.

File 02

"Ashley's" photo Ashley Graham (20 years old)
Daughter of the president of the USA.
A few days ago
She went missing without a trace from the Massachusetts state college.
The possibility that someone has taken her to Europe is high. It was a well-planed crime, but we do not know what their intentions are.  

File 02 reveals that Ashley was attending College at Massachusetts State. A detail which was left open in the final version of the game.

Option: When selected this does nothing but make a sound.

While playing through the game with the debug menu unlocked you wont really notice too much thats different besides the above. One significant change is the ending to the demo. Rather than ending right after the villagers go into the church the game tries to load the Hunnigan radio call at the end. The game crashes at that point, so you wont be able to play the game again. It will require a reset.


While searching the game I found at least two other files inside the game tucked away in random spots. These only appear if the debug menu is activated. You can identify them by the flashing sprite that is shown on some items. File 03 is located inside the first villagers house at the bookcase in the Fireplace room.


File 03

About disposing corpses. Once you kill men, there aretwo ways to get rid of the corpses. 1. Gather them up at the farm and set fire to them. They will become good fertilizer.
2. Offer the corpses to the "lake" and then go away from that spot. Do not dispose of corpses while alone.

Some key insights into the Ganado's world are shown on File 03. Namely, it explains why the FARM area has the stacks of bodies piled up. This file was removed in the final version of the game.

File 04 is found inside the main village area, near the door which the Chainsaw Ganado would block if you were to take that path before entering the house. It is on a stove inside one of the houses front yards.


File 04

Execution Orders A few days ago, captured... escaped from farm earlier... in confinement. ...Master has confirmed his intentions.
...We have no more use... for that plan.
At dawn...
We will... execute that person...
(The rest is so dirty that I can't read it.)"

A very interesting file for sure, it seems to be speaking about Luis. The note appears to have spots missing as its been stained with something (perhaps blood).

Return to Features Index

Part 1: Introduction to Trials
-Page1 - Determining Demo Builds
Part 2: Trial Contents
-Page2 - Resident Evil 4 Preview Disc Extra's (GCN)
-Page3 - Resident Evil 4 Trial (GCN)
-Page4 - Biohazard 4 Trial (GCN)
-Page5 - Resident Evil 4 Trial (PS2)
-Page6 - Resident Evil 4 Trial (GCN) Screen Shots
-Page7 - Biohazard 4 Trial (GCN) Screen Shots
-Page8 - Resident Evil 4 Trial (PS2) Screen Shots
Part 3: Hacking the Trials
Resident Evil 4 Trial Edition
-Page9   - Title Screen Debug (Various settings)
-Page10 - Title Screen Debug (Map's and Rooms)
-Page11 - Title Screen Debug (Map's and Rooms cont)
-Page12 - Title Screen Debug (Map's and Rooms cont)
-Page13 - Title Screen Debug (Map's and Rooms cont)
-Page14 - Title Screen Debug (Various Settings)
-Page15 - Title Screen Debug (Page Settings)
-Page16 - Title Screen Debug (Beta Maps, Beta Items)
-Page17 - Title Screen Debug (Videos of Mount Weapons)
-Page18 - Equipment Screen Debug (Beta Items)
-Page19 - In Game Debug (Settings)
-Page20 - In Game Debug (Settings cont)
-Page21 - In Game Debug (Flag Edit: Debug)
-Page22 - In Game Debug (Flag Edit: Stop)
-Page23 - In Game Debug (Flag Edit: Status)
-Page24 - In Game Debug (Flag Edit: System)
-Page25 - In Game Debug (Flag Edit: Item_Set, Scenario,
Key_Lock, Room, Room_Save, Config, Disp)
-Page26 - End (Download Link)
Biohazard 4 Trial Edition
-Page27 - Debug Changes
-Page28 - Item Debug Menu

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Q1 2018 (Speculation)
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Q1 2018 (Speculation)
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