هذه لعبة جماعية.

Because لعبة is a feminine singular noun, and the demonstrative must match it.

• هذا = this for masculine singular
• هذه = this for feminine singular

So since لعبة is feminine, you say هذه لعبة.

A very common clue is the ending ة (called taa marbuuTa).

Many nouns ending in ة are feminine, and لعبة is one of them. So learners quickly recognize لعبة as feminine because of that ending.

Its fully pronounced form is roughly luʿbah, but in connected grammar it behaves as a word ending in t underneath, which is why you may see related forms where the t sound becomes clearer.

In Arabic, the verb to be is usually not expressed in the present tense.

So a sentence like:

• هذه لعبة جماعية

literally looks like:

• this game group-based

but it naturally means:

• This is a team game or This is a group game

This is completely normal in Arabic. If you want was or will be, Arabic usually does use a verb, but in the simple present it often leaves it out.

In Arabic, adjectives normally come after the noun they describe.

So:

• لعبة جماعية = a group/team game

not the other way around.

This is one of the biggest word-order differences from English. English usually puts adjectives before nouns, but Arabic usually puts them after.

Because Arabic adjectives must agree with the noun they describe.

Since لعبة is:

• feminine
• singular
• indefinite

the adjective جماعية must also be:

• feminine
• singular
• indefinite

That is why you get:

• لعبة جماعية

If the noun were masculine, the adjective would normally be masculine too.

They are indefinite because they do not have الـ at the beginning.

Compare:

• لعبة جماعية = a team/group game
• اللعبة الجماعية = the team/group game

In Arabic, when a noun is modified by an adjective, the adjective matches it in definiteness too. So if the noun is indefinite, the adjective is indefinite; if the noun is definite, the adjective is definite.

This is a nominal sentence in Arabic, meaning a sentence built without a present-tense verb.

A simple way to understand it is:

• هذه = demonstrative, this
• لعبة جماعية = noun phrase, a team/group game

So the whole sentence works like:

• This is a team/group game

Arabic often uses this kind of structure for basic descriptions and identifications.

Yes. In fully vocalized formal Arabic, it could be written as:

• هٰذِهِ لُعْبَةٌ جَمَاعِيَّةٌ

Those final -un endings show that لعبة and جماعية are indefinite.

In everyday writing, these short vowels are usually omitted, so you normally see:

• هذه لعبة جماعية

Both represent the same sentence.

It is usually pronounced hādhihi in careful Modern Standard Arabic.

A few notes for learners:

• The ذ sound is like the th in this
• So هذ is not like English z
• The final written ه is part of the word and is pronounced in careful reading

So a rough pronunciation is:

• hā-dhi-hi

Some speakers may shorten the final vowel in pause, but hādhihi is the safe careful form for learners.

Yes, here it functions as a regular adjective.

It comes from the idea of group, collective, or team-based, from the root connected with جماعة (group). In this sentence it describes the type of game.

So جماعية means something like:

• group
• collective
• team-based

The exact English translation can vary depending on context, but grammatically it is simply the adjective describing لعبة.

In Arabic, demonstratives like this and that commonly come before the noun:

• هذه لعبة = this game
• هذا كتاب = this book

So the order is normal:

• demonstrative + noun + adjective

In this sentence:

• هذه = this
• لعبة = game
• جماعية = group/team-based

Grammatically, yes: the Arabic structure is the same either way. The exact English wording depends on context.

جماعية suggests that the game is done with a group or as a team, rather than individually. So natural English translations might include:

• This is a team game
• This is a group game
• This is a collective game

The important grammar point is that جماعية is the adjective modifying لعبة.