Spillekvelden på spillkafeen begynner nå.

Spillekvelden is a definite singular noun. The base form is en spillekveld, and the definite form is spillekvelden.

You can break it down like this:

• spillekveld = a game night / an evening of playing games
• spillekvelden = the game night

So the ending -en is doing the job that English usually does with the.

Because Norwegian normally writes compound nouns as a single word.

So:

• spill + kafe → spillkafe
• spille + kveld → spillekveld

This is very different from English, where we often write similar expressions as two words, like game night or game café. In Norwegian, keeping compound nouns together is the normal rule.

The ending -en marks the noun as definite singular for many common-gender nouns.

Examples:

• en spillekveld → spillekvelden
• en spillkafe → spillkafeen

So both nouns are definite:

• spillekvelden = the game night
• spillkafeen = the game café

Because Norwegian usually puts definiteness on the noun itself instead of using a separate article the way English does.

So English says:

• the game night
• the game café

But Norwegian says:

• spillekvelden
• spillkafeen

A separate word like den is usually added only in certain cases, especially with adjectives:

• den store spillkafeen = the big game café

Here på means something like at.

Norwegian often uses på with places such as venues, events, institutions, and social settings where English would often use at or sometimes in.

So:

• på spillkafeen = at the game café

It does not mean physically on top of the café.

Using i would focus more on being inside something physically, while på is the more natural idiomatic choice here for the setting.

Begynne is the infinitive form, meaning to begin.

Begynner is the present tense:

• å begynne = to begin
• begynner = begins / is beginning / is starting

Norwegian present tense is simple here: you usually add -r to the infinitive.

Also, Norwegian verbs do not change for person:

• jeg begynner
• du begynner
• han/hun begynner
• vi begynner

It can naturally cover both ideas.

In Norwegian, the simple present often does work that English sometimes expresses with either:

• begins now
• is starting now

In an announcement like this, begynner nå sounds very natural and means the event is starting at this moment.

Because nå is a time adverb, and putting it near the end is very natural in Norwegian.

So this order works well:

• Spillekvelden på spillkafeen begynner nå.

But nå can also come first for emphasis:

• Nå begynner spillekvelden på spillkafeen.

That version gives extra focus to now.

The sentence is built like this:

• Spillekvelden = subject
• på spillkafeen = phrase describing the setting / which game night
• begynner = finite verb
• nå = time adverb

So the pattern is roughly:

Subject + place phrase + verb + time word

That is a very normal Norwegian main-clause structure.

Yes. Norwegian main clauses follow the V2 rule, which means the finite verb must stay in second position.

So:

• Spillekvelden på spillkafeen begynner nå.
• Nå begynner spillekvelden på spillkafeen.

When nå moves to the front, begynner must come immediately after it.

You would not say:

• Nå spillekvelden på spillkafeen begynner. ❌

Most naturally, it identifies which game night we are talking about: the one at the game café.

So the sentence is understood as:

• the game night at the game café is starting now

In practice, that also tells you where the event is taking place, so the difference is not very important here.

Only because Spillekvelden is the first word of the sentence.

Norwegian does not capitalize ordinary nouns the way German does. So if the word appeared in the middle of a sentence, it would normally be lowercase:

• Jeg tror spillekvelden begynner snart.

So the capital letter here is just normal sentence-initial capitalization.

Yes. The definite forms show that both are specific:

• spillekvelden = a particular game night
• spillkafeen = a particular game café

So this sounds like a sentence said in a context where the listener already knows which event and which place are meant, or where the speaker is making a direct announcement about them.