pureininzuu o kakuninsuru.

direct object particle

Breakdown of pureininzuu o kakuninsuru.

• 確認かくにんする: to check
• プレイ人数にんずう: the number of players

Questions & Answers about pureininzuu o kakuninsuru.

How do you read プレイ人数を確認する?

It is read:

プレイにんずう を かくにんする

Breakdown:

• プレイ = play
• 人数（にんずう） = number of people
• 確認する（かくにんする） = to confirm, check

So the whole phrase is プレイにんずうをかくにんする.

What does 人数 mean exactly?

人数 means the number of people.

It is made of:

• 人（にん） = person / people
• 数（ずう） = number

So プレイ人数 literally means something like the number of people for play, which in natural English becomes number of players.

Why is it プレイ人数 and not something with プレイヤー?

Japanese often makes compact compound nouns, especially in game menus, apps, labels, and product descriptions.

So:

• プレイ人数 = number of players / supported number of players

Even though プレイヤー means player, Japanese often prefers shorter label-style expressions like プレイ人数 in UI or packaging.

A native English speaker might expect something more literal, but Japanese frequently uses concise noun compounds like this.