Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07471 Gameplay Minor Sometimes Nov 1, 2019, 13:37 Jan 11, 2020, 09:08
Tester Dumple View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10 (64-bit)
Status [?] Confirmed Driver
Version 0.215 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 07471: empcityu, empcityj: [possible] Empire City 1931 boss stage graphic/gameplay glitch
Description Issue triggered when reaching the boss stage in Empire City: 1931 (the stage after round 8, where you have one shot to kill the boss). Instead of showing the building, the "lose a life" picture was shown, and the game didn't respond to movement or buttons, just counted down the timer.

I triggered this once on empcityu on a game where I continued, and I triggered this once on empcityj on a game where I reached the boss stage on a first credit. I'm not sure what triggers it. The next time I played empcityj we made it through the boss stage without the bug. I haven't played the original PCB so I'm not certain this is an emulation issue.

Attached is an .inp file which reproduces the issue for me with empcityu on MAME 0.212.
Steps To Reproduce Play through the game (with or without continues) and reach the "boss stage" after completing round 8.
Additional Information
Github Commit
Flags Possible
Regression Version
Affected Sets / Systems empcityu,empcityj
Attached Files
? file icon empire-glitch.inp (273,948 bytes) Nov 1, 2019, 13:37 Uploaded by Dumple
.inp file for reproducing the issue
zip file icon (26,568 bytes) Nov 7, 2019, 10:53 Uploaded by MetalGod
zip file icon empcityu (2 savestates).zip (52,951 bytes) Nov 7, 2019, 11:04 Uploaded by MetalGod
There are no relationship linked to this issue.
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Senior Tester
Nov 4, 2019, 19:51
Test it in mame 0.215. It's crucial to test the last mame version if you want to report an issue.
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Senior Tester
Nov 7, 2019, 10:52

I've only made it once to the final level of the game and the bug has appeared. So it seems it is quite common.

Uploaded savestate
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Senior Tester
Nov 7, 2019, 11:05
Uploaded "empcityu (2 savestates).zip"
2.sta = bugged final level
3.sta = correct final level could be deleted. I can't do it.
User avatar
Jan 11, 2020, 06:56
edited on: Jan 11, 2020, 07:08
It seems the issue be caused by pressing the defend button just before clearing scene 8, and then clearing it while still displaying the avoidance effect.
I confirmed it in the Japanese version.
This may be a problem with the original PCB, but I can't reach this scene without state saving of MAME.


State save just before scene 8 clear in 0.217
User avatar
Senior Tester
Jan 11, 2020, 09:07
edited on: Jan 11, 2020, 09:11
I've played the whole USA version of the game without saving, just continuing. I can confirm Sasuke's idea of the issue: It only happens when you keep pressing the defend button when finishing stage 8. So yes, this could be a pcb issue, a BTANB. Marking as possible and adding it to my list.