Is crszonev4a actually an US set?

[FMecha]

MAME version

0.271 (mame0271-102-g3cc7f278ddb)

System information

Windows 10 22H2 [Version 10.0.19045.5011] 64-bit, English
Acer Aspire A315-55G (Intel Core i5-1021U / NVIDIA GeForce MX230 / 16 GB RAM)
Default settings for most part.

INI configuration details

No response

Emulated system/software

crszonev4a

Incorrect behaviour

crszonev4a is supposedly a "(World, CSZO4 Ver. A)" version. However, when it boots, there is the presence of AAMA rating screen, as well as higher default coin setup (4 to start/2 to continue), which is more in line of an US set. For comparison, the parent crszone set, labeled "(World, CSZO4 Ver. B)", has 2 to start/1 to continue coinage and no AAMA rating screen (but has green hit sparks; crszonev2a/v2b, the World/CZO2 versions, doesn't have green hit sparks).

FIGHTERS CHOICE Arcade on YouTube claims that their Crisis Zone board with green hit sparks is CZO4 Ver. A, which makes me wonder if crszonev4a might be mislabeled. (The current "CZO4 Ver. A" in MAME has orange hit sparks.)

Expected behaviour

crszonev4a might need to be re-labeled as an US set. This would mean that it would be an alternate version of CZO3, given Namco region numbering:

• 1: Japan
• 2: World
• 3: US
• 4: World (alt)
• 5: US (alt) - according to Time Crisis II (timecrs2v5a) anyway.

Steps to reproduce

Boot crszonev4a, and note the AAMA rating screen on startup.

Additional details

No response

[Hydreigon223]

Namco game region numbers have been inconsistent (likely depends on order or release date by region). Motocross Go is another example. Any MG2 set shows the AMMA screen and skips the bike select screen while MG3 is the exact opposite. The game boards in both cabs I own are also labeled as MG2 and have the previous two changes listed.

[mamehaze]

yeah, as per @Hydreigon223 the Namco numbering isn't tied to region, there are quite a few examples that prove as much.

Most likely just the order they go into production, which is usually the same simply due to market conditions, but not always.

You have to look at the evidence based on the sets, and yeah, the US warning screens being on one set, but not another is a pretty good indicator.

Reminds me, Truck Kyosokyoku (Japan, TKK2/VER.A) is definitely NOT a Japanese version either, as the Japanese language option isn't even available in that set (it's in the code, but you don't even have the ability to enable it without a debug trick) Despite the very Japanese presentation and title screen that one stands quite a high chance of actually being a rare US set, or maybe Asia (it has the parental advisory warning and all the important in-game text displays the localized English strings)