tomodati ha taisengatageemu de burahu wo tukau.

は marks 友達 as the topic of the sentence: as for my friend / as for the friend.

So the sentence is structured like:

• 友達は = as for my friend
• 対戦型ゲームで = in competitive games
• ブラフを使う = uses bluffs / uses deception

A learner often wonders why it is not が. In a sentence like this, は is very natural because the speaker is talking about their friend as the topic and then saying something about that friend.

Here, で marks the place, setting, or context in which the action happens.

So 対戦型ゲームで means:

• in competitive games
• when playing competitive games

This is similar to how で is often used for the location of an action:

• 学校で勉強する = study at school
• 店で買う = buy at a store

In this sentence, the “location” is more like a situation or field of activity rather than a physical place.

を marks the direct object of the verb.

The verb is 使う (to use), so the thing being used is marked with を:

• ブラフを使う = use a bluff / use bluffing

This is a very common pattern:

• 道具を使う = use a tool
• 日本語を使う = use Japanese
• ブラフを使う = use a bluff

使う is the plain dictionary form of the verb.

In Japanese, this form can mean:

• present/habitual: uses
• future: will use

So depending on context, ブラフを使う could mean:

• uses bluffs
• will use a bluff

In a simple sentence like this, it often sounds like a habitual/general statement: the friend tends to use bluffs in competitive games.

If you wanted a polite version, you would say:

• 友達は対戦型ゲームでブラフを使います。

By itself, 友達 can mean friend or friends, depending on context.

Japanese often does not mark singular/plural as clearly as English does. So this sentence could mean:

• My friend uses bluffs in competitive games.
• My friends use bluffs in competitive games.

Usually, context tells you which one is intended.

Also, notice there is no word like a or the in Japanese here. Japanese usually leaves that kind of information unstated unless it matters.

対戦型ゲーム is a compound noun meaning something like competitive game, especially a game where players compete directly against each other.

It can be broken down like this:

• 対戦 = match, contest, head-to-head battle
• 型 = type, style
• ゲーム = game

So literally it is something like battle-type game or competitive-type game.

Depending on context, it could refer to things like:

• fighting games
• card games
• strategy games
• other player-vs-player games

Yes, ブラフ is a katakana loanword based on English bluff.

In Japanese, it usually means:

• a bluff
• deception in a game
• pretending to have a better position than you really do

It is especially common in contexts like:

• poker
• card games
• strategy games
• psychological gameplay

Because it is written in katakana, that also signals that it is a borrowed or foreign-sounding word.

Japanese word order is often much more flexible than English, but the basic pattern is:

• topic / subject + object + verb

In this sentence:

• 友達は = topic
• 対戦型ゲームで = context/setting
• ブラフを = object
• 使う = verb

The biggest thing for English speakers to get used to is that the verb usually comes at the end.

So instead of:

• My friend uses bluffs in competitive games

Japanese naturally says something closer to:

• As for my friend, in competitive games, bluffs uses

Of course that literal English order sounds wrong, but it helps show how Japanese is structured.

This sentence is in plain style because it ends with 使う rather than 使います.

So it is appropriate in:

• casual conversation
• dictionary examples
• informal writing
• statements about facts in plain style

If you want to make it polite, change the verb:

• 友達は対戦型ゲームでブラフを使います。

Everything else can stay the same.

Yes. Japanese often omits information that is clear from context.

So if everyone already knows you are talking about your friend, you could simply say:

• 対戦型ゲームでブラフを使う。

That would still be understandable in the right context.

Japanese drops subjects and topics much more often than English does, so learners should get used to the idea that not every sentence says who explicitly.

Yes, it is natural and understandable. It means to use a bluff or to bluff in a game.

Japanese often uses する-type expressions or borrowed nouns with verbs like 使う to describe game tactics and strategies.

Depending on context, native speakers might also use other expressions for deception or feinting, but ブラフを使う is a very normal and clear phrase for learners to know.