HyrulianScrolls said:
Japan opening doesn’t tell us much since it’s such a small market for the game, and consider the fact that it still might not beat Other M’s opening there (aka one of the worst selling modern Metroids worldwide). Kind of says it all for how little Japan matters for this franchise.
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Other M is actually a middle of the pack sales-wise game in the Metroid franchise. It sold almost as much as Prime 3. 2D Metroids sell better in Japan than 3D Metroids, so that explains a lot of why it is #2 and above all of the Prime series. Prime 4 outselling it is a good sign, not a bad one.
If you do a regression analysis, first week Japanese sales and lifetime worldwide sales have an R^2 of about .44 with a significant p-value, which is moderately positive relationship. What that means is that 44% of total variance in sales in the Metroid series can be explained by the variance in first week Japanese sales.
The equation I get from that analysis is Total sales = .3425 + 29.9213 * (Japan First week sales in units of million sales.) If we did that using the Prime 4 estimates, we would get total sales of 1.58 Million to 1.94 Million. That's roughly on par with or slightly higher than Prime 3.
If we just look at the Prime games, we get an R^2 of .27 (weaker relationship makes sense given prime series is less popular in Japan, more popular worldwide) and an equation of total sales = .1464 + 49.59 * (Japan First week sales in units of million sales.) That would give us sales of 2.2 million to 2.8 million for Prime 4.
Confidence intervals are pretty large, given the few data-points, but 1.6 million seems to be a baseline here, which while probably isn't what Nintendo wants given the costly development cycle, isn't "below typical Metroid sales numbers."
Edit: Also where the linear model is off, it is because it mostly underestimates the sales based on Japanese first week, rather than overestimating.
Last edited by sc94597 - on 13 December 2025