Is database needed for 2D games?

Hi, I recently found interest in making 2D games and I was wondering how important database is.
I want to make simple 2D games like Mr.Jump and Crossy Road.
And when we play the game, our best score and new characters get saved in our phone.
Is that something to do with database?
If so, can you recommend me a language to study and approximate depth I have to reach in that language?

 

There is no need to use a database for saving such stats, you can simply store them in files. That is what Application.persistentDataPath is for.

 

Does it mean that characters and best records etc are saved to individual user's phone and Application.persistentDataPath enables this?
I haven't studies it yet, so can you tell me what it is? Is it just a code?

 

Perhaps Seldom isn't on the same page as you, yes you can store things locally, but if you want them globally (like players from around the world put their ranks). Then, yes you will need some sort of database where players can connect too. Not sure if Android and Iphone have built in functions for any of this(like through their business - create leader boards for you), but however that may be, you can always set your own up.

I haven't ever done it yet, but somebody could correct me about this, but I believe you'll need to use the WWW Class inside Unity. Just go to google and type in Unity WWW Class and it will pop up somewhere.

 

It depends if earning characters, rewards, and achievements is something that you want to share on a game social leaderboard between many players or just locally for that device. The entire dB would reside on a server designed to handle such a game.

 

You'll use a database for accounts, leaderboards, and basically anything that requires other people to see your information or information that can't shouldnt stored locally (accounts and scores if the game is using leaderboards). Its rather simple to change databases from unity and requires you to know very basic php. From unity using the WWW class and WWWForm class you can send a request to "run" your php script and the php script will then do whatever you program it to do. It can insert new data into your table, update data, delete data, anything. Go look up some tutorials on php and mysql on w3schools (great resource I use it all the time). I wish you luck!