Navíc máme dva žetony.

Here navíc means in addition, additionally, or on top of that.

At the start of the sentence, it applies to the whole statement:
Besides what we already mentioned, we also have two tokens.

So Navíc máme dva žetony. is not just about the tokens being extra; it can also mean the whole fact is an added piece of information.

Because Czech usually does not need subject pronouns when the verb ending already shows who the subject is.

máme already means we have.

So:

• máme = we have
• my máme = we have too, but with extra emphasis, contrast, or emotion

For example, my máme dva žetony could sound like we have two tokens (unlike someone else).

máme is the 1st person plural present tense of mít (to have).

A few present-tense forms of mít are:

• mám = I have
• máš = you have
• má = he/she/it has
• máme = we have
• máte = you have
• mají = they have

So in this sentence, máme simply means we have.

Because žeton is a masculine noun.

In Czech:

• dva is used with masculine nouns
• dvě is used with feminine and neuter nouns

Examples:

• dva žetony = two tokens
• dvě knihy = two books
• dvě auta = two cars

Since žeton is masculine (ten žeton), the correct form is dva.

Because after two, three, four in Czech, the noun normally appears in the plural.

So:

• jeden žeton = one token
• dva žetony = two tokens
• tři žetony = three tokens
• čtyři žetony = four tokens

In this sentence, dva žetony is the object of máme, so it is in the accusative plural. For masculine inanimate nouns like žeton, the accusative plural looks the same as the nominative plural, so you get žetony.

žeton is masculine inanimate.

That matters because masculine animate and masculine inanimate nouns often behave differently, especially in the accusative.

For example:

• masculine animate: vidím dva studenty = I see two students
• masculine inanimate: mám dva žetony = I have two tokens

Since žeton is an object, knowing that it is inanimate helps explain why the form is žetony.

Yes, but the nuance can change.

• Navíc máme dva žetony.
  = Additionally, we have two tokens.
  Here navíc comments on the whole sentence.

• Máme navíc dva žetony.
  = more like We have two extra tokens.
  Here navíc can sound more closely connected to dva žetony.

In real context, both may sometimes overlap, but the word order affects what feels emphasized.

Normally, no.

You simply write: Navíc máme dva žetony.

In Czech, a sentence-opening adverb like navíc does not automatically take a comma just because it comes first.

A simple English-style approximation is:

NAH-veets MAA-meh DVAH ZHEH-toh-nee

A few useful points:

• ž sounds like the s in measure
• c sounds like ts
• Czech stress is usually on the first syllable of each word

So:

• Navíc ≈ NAH-veets
• máme ≈ MAA-meh
• žetony ≈ ZHEH-toh-nee

Not always exactly. It can mean token, chip, counter, or a similar small object, depending on context.

For example, žeton might be used for:

• game pieces
• casino-style chips
• transport or machine tokens
• counters used for keeping score

So the best English translation depends on the situation.