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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08747 Graphics Major Sometimes Aug 26, 2023, 07:44 Sep 4, 2023, 06:20
Tester ggmaximo View Status Public Platform MAME (Unofficial Binary)
Assigned To Resolution Open OS Windows 10/11 (64-bit)
Status [?] Acknowledged Driver
Version 0.257 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08747: raiden, raidena, raidenu: boss graphics stuck on screen
Description I noticed over the years (from personal runs & replays from other players) that destroying some bosses/boss phases while bombing can cause glitches where parts of the boss graphics remain on screen indefinitely until you reset the machine.
This bug apparently does not occur on the arcade PCB, looking at run footage such as SOF-WTN's run here ( timestamp 1:26:24):
This bug most commonly occurs on the stage 3 boss ( as it transitions to its second phase), stage 5 boss, and stage 7 boss.
As far as I know, this bug was originally seen on ShmupMAME 4.2 and older versions of MAME, but it looks like it occurs on my build based on 0.239, so it may still be present in newer versions of MAME.
(Edit 08/26) - Tested this on the latest official build of MAME 0.257, I was still able to reproduce the glitch on the 3rd boss with the updated screenshot)
Steps To Reproduce 1. Insert a credit and play the game until you get to the stage 3 boss with full power in Blue Laser/ ( Missile or Homing).
2. Damage the center part of the boss and then bomb as soon as the boss explodes and sends a column of bullets at you ( phase change into 2nd phase)
3. You can continue to fight & destroy the boss by killing the central part, but you can notice that parts of the boss are stuck on screen in you scroll left/right.
Additional Information
Github Commit
Regression Version
Affected Sets / Systems raiden,raidena,raidenu
Attached Files
png file icon raidenbossglitchmame0257b.PNG (845,118 bytes) Aug 26, 2023, 18:12 Uploaded by ggmaximo
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Senior Tester
Aug 26, 2023, 08:39
You must test this on the last official mame or this report won't be accepted.
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Aug 26, 2023, 18:14
Gotcha, I just tested this out on the latest available build of MAME (0.257b). I was still able to get the boss graphic glitch using the same steps to reproduce the bug above on the 3rd boss.
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Senior Tester
Sep 3, 2023, 13:55
would be interesting to see if this one happens on hardware, while a classic, some of the programming in Raiden isn't especially good.