ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
JESPA's cave
Kill 6 enemies, don't break rocks
RC 16		Herb 10000F
Break any rock
RC 17		Randar
Stab 10 times
RC 07		Potion 10000F
Open on arrival
RC 01		Winkle
Stab 20 times
RC 19		RIO 57
Opens with 1/65536 chance
RC 69		RIO 13
Open on arrival
RC 01		Bible 500F
Stab a specific grave
RC 21		Potion 500F
Stab a specific grave
RC 22		RIO 14
Stab upper right grave
RC 23		Potion 5000F
Open on arrival
RC 01		Bible 2000F
Wait 1000 frames
RC 24
2
RIO 15
Open on arrival
RC 01		RIO 16
Defeat JESPA
Closes after HAIDEE
RC 25		Bible 10000F
Kill 10 enemies
RC 20		ANOTHER CAVE (hori)
Kill 6 enemies
RC 03		Dina
Open on arrival
RC 01		Winkle
Kill 1 enemy
RC 04		Herb 1000F
Kill 6 enemies
RC 03		RIO 17
Kill 6 enemies
Closes after FOTHBUS
RC 26		RIO 18
Open on arrival
RC 01		Valley (Blue) Sword 3000F
Open on arrival
RC 01		RIO 19
Kill 3 enemies
RC 02		TALBUR's cave
Stab the tree 10 times
RC 27
3
Crystal 6000F
Defeat JESPA
RC 28		RIO 62
Press MSX Pause key
RC 71		RIO 20
Obtain all potions
RC 29		Potion 1500F
Kill 15 enemies
RC 68		Randar
Kill 3 enemies
RC 02		RIO 21
Stand still for 500 frames
RC 30		Bible 4000F
Kill 3 enemies
RC 02		Alzas (Blue) Shield 500F
Kill 10 enemies
RC 20		RIO 22
Before killing TALBUR
RC 31		Crystal 3000F
Defeat TALBUR
RC 32		Dina
Stab 3 times
RC 05		Potion 2500F
Open on arrival
RC 01
4
Potion 1000F
Kill 3 enemies
RC 02		RIO 24
Open after HAIDEE
RC 33		Randar
Touch a specific sand tile
RC 43		Herb 3000F
Open on arrival
RC 01		Potion 5000F
Stab 10 times
RC 07		Enny
Kill 3 enemies
RC 02		Bible 3000F
Stab 10 times
RC 07		RIO 25
Open on arrival
RC 01		Potion 1000F
Attack the tree once
RC 34		RIO 26
Stab 10 times
RC 07		RIO 07
Open on arrival
Closes after 6 potions
RC 15		CYPA's cave
Stab end of corridor
RC 13
5
Bible 1000F
Kill 3 enemies
RC 02		RIO 27
Kill 3 enemies
RC 02		Potion 2500F
Open on arrival
RC 01		RIO 11
Open afer WALSO
Closes after JESPA
RC 59		RIO random
Stab exactly 30 times
Then wait 500 frames
RC 72		RIO 52
Press Up + Down together
RC 35		RIO 23
Open on arrival
RC 01		RIO 28
Have under 500F
RC 36		RIO 29
Open on arrival
RC 01		Enny
Open on arrival
RC 01		Crystal 2000F
Defeat CYPA
RC 12		Enny
Kill 3 enemies
RC 02
6
RIO 30
Stab a rock in the water
RC 37		Randar
Open on arrival
RC 01		Winkle
Open on arrival
RC 01		RIO 61
Open after Vanish Ring
RC 48		Aqua Boots 20000F
Defeat WALSO
RC 58		Bible 2000F
Open on arrival
RC 01		RIO 31
Kill 6 enemies
RC 03		Bible 3000F
Open on arrival
RC 01		RIO 32
Kill 34 enemies
RC 38		RIO 33
Gain 5000 FIND MAX
RC 39		RIO 10
Open on arrival
RC 01		Bible 1500F
Stab 15 times
RC 11
7
Ramras (Gold) Pendant 6000F
Stab 3x on the pier
RC 40		Potion 2000F
Stab a specific grave
RC 41		RIO 34
Obtain 100000 max FIND
RC 42		Bible 3000F
Walk into river nook
RC 43		RIO 35
Open after JESPA
Closes after HAIDEE
RC 25		RIO 49
Open after FOTHBUS
Closes after WALSO
RC 44		Valley (Blue) Sword 6000F
Stab the tree 3 times
RC 45		Herb 500F
Kill 6 enemies
RC 03		RIO 12
Before killing CYPA
RC 18		Bible 2000F
Break a specific rock
RC 09		RIO 58
Open on arrival
RC 01		RIO 08
Opens after 3 potions
RC 10
8
RIO 60
Stab 15x anywhere
RC 11		Herb 5000F
Kill 6 enemies
RC 03		ANOTHER CAVE (vert)
Kill 6 enemies
RC 03		RIO 36
Kill 3 enemies
RC 02		RIO 37
Open on arrival
RC 01		Dina
Open on arrival
RC 01		Legend (Gold) Sword 30000F
Destroy rock in upper right
RC 46		Winkle
Open on arrival
RC 01		Alzas (Blue) Shield 5000F
Open on arrival
RC 01		RIO 56
Open on arrival
RC 01		Randar
Open after JESPA
RC 28		RIO 09
Open on arrival
Closes after 6 potions
RC 15
9
Crystal 7000F
Open after HAIDEE
RC 33		RIO 38
Open after Vanish Ring
RC 48		Randar
Open on arrival
RC 01		RIO 53
Press Enter key
RC 49		Winkle
Open on arrival
RC 01		Enny
Open on arrival
RC 01		Randar
Open on arrival
RC 01		Randar
Open on arrival
RC 01		RIO 05
Open on arrival
Closes after DESVA
RC 08		RIO 50
Open after HAIDEE
RC 33		HAIDEE's cave
Stab the 7 dead trees
RC 47		RIO 51
Open after HAIDEE
RC 33
10
RIO 39
Open on arrival
RC 01		RIO 54
Enter R R L L U D L D D D
RC 51		RIO 40
Obtain all items
RC 53		RIO 59
Open on arrival
RC 01		FOTHBUS's cave
Stab rock in center
RC 54		Crystal 4000F
Defeat FOTHBUS
RC 55		RIO 41
Stab one of the rocks
RC 56		GOLVELLIUS's cave
Break outer rocks then stab center rock
Must have all crystals
RC 57		Crystal 1000F
Defeat DESVA
RC 06		RIO 55
Purchase the Zest Boots
Closes after DESVA
RC 67		Potion 1200F
Kill 1 enemy
RC 04		Bible 500F
Open on arrival
RC 01
11
Crystal 5000F
Defeat WALSO
RC 58		RIO 42
Kill 10 enemies
RC 20		RIO 43
Kill 10 enemies
RC 20
RIO 44
Open after JESPA
Closes after HAIDEE
RC 25		Herb 10000F
Open on arrival
RC 01		Vanish Ring 10000F
Kill 3 enemies
FOTHBUS must be dead
RC 70		RIO 45
Open after WALSO
Closes after JESPA
RC 59		Aleste (Red) Pendant 20000F
Open on arrival
RC 01		Potion 500F
Open on arrival
RC 01		RIO 01
Open on arrival
RC 01		RIO 02
Open on arrival
RC 01		RIO 03
Open on arrival
RC 01
12
WALSO's cave
Break rock in middle
RC 60		Remedia (Gold) Shield 20000F
Break lower left rock
RC 61		Bible 1500F
Break upper left rock
RC 62		RIO 63
Stab the tree
RC 63		RIO 47
Press Spacebar key
Can't be holding arrows
RC 64		Bible 2000F
Open on arrival
RC 01		RIO 48
Open on arrival
RC 65		Potion 2000F
Wait for 500 frames
Timer resets if you attack
RC 66		Red Boots 300F
Kill 6 enemies
RC 03		Randar
Open on arrival
RC 01		Starting Point
Sound Test
Enter L R L R L R
RC 52		DESVA's cave
Kill 6 enemies
RC 03
13
14
To easily access caves:
Use openMSX emulator and load ROM
Choose Tools > Trainer selector
Select Golvellius trainer
Enable "Open All Holes" cheat
RIO ##: Refer to Rio sheet for the relevant text
RIO random: Shows a random piece of dialogue
seemingly chosen from all Rio text in the ROM
including otherwise unused (?) text
RC ## refers to the internal codes for the reveal conditions
See the Reveal Condition sheet for more details
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Resources
17
https://www.mctv.ne.jp/~knither/kouryaku/maou-golvellius/maou-golvellius-index.html
Lovely information, doesn't list reveal methods explicitly it helped me figure some of them out.
18
http://web1.kcn.jp/kyoto/Golvellius/index.html
Guide by a Golvellius hater. Contains a lot of useful info nonetheless, and a screenshot map.
19
https://gamefaqs.gamespot.com/msx/566293-golvellius/faqs/81740
A guide posted in 2025 (?!) that taught me how to reveal the Sound Test.
20
https://archive.org/details/golvellius-manual
The English manual from the Woomb translation.
21
https://tcrf.net/Maou_Golvellius_(MSX)
TCRF page. Documents the title screen funny face codes.
22
https://www.amusementfactory.com.br/main/?l=en
Homepage of MSX disassembler I used to analyze the reveal condition code (in addition to the built in disassembler in openMSX).
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