Dark Souls is different. And different the way a game should be.
What do we look in a game? Why do we play a game?
We want to feel something that can't be felt in the real world. Don't we?
We look for a challenge that is deemed impossible and try to somehow accomplish it. We look for secrets that are mindblowing & fascinating when revealed. We want a story that will be remembered through out our lives.In simple we look for something that is not ordinary.
But do we feel that kind of thing in modern games? Take call of duty or battlefield for an instance. Every year the developers release a new game which is actually the same bullshit they've fed us the year before. Only a bit modernized & with updated graphics. It is the same damn thing with no interest at all. And is there a challenge to finish the game? Not at all.
Most of the modern games lack the real challenge that we look for.
Simply told, the game teaches you everything from the beginning and there is nothing to do at all other than following the path that you are told to go.
Then comes Dark Souls.
People say the game is extremely difficult. I say "not at all". The game is what A GAME SHOULD BE. Which will give you memories that'll never fade away in your entire life. The challenge we have been looking for. But not because it's difficult. It's because you learn bit by bit. You learn with every single step you take forward. And what lies in front of you is a mystery that should be solved through the process of learning.
You might think "WTF?"
Just play Dark Souls and you'll see. Those who play & finish the game will love it dearly and say one of the best. Those who doesn't will say it's shit and boring. 
I've played a lot of games and to me Dark Souls is one of the best games ever created. One of my two most favoured, loved gaming franchises. The other being "The Witcher". Watch the videos & maybe you'll understand. But the best way is by playing the games. To the end.
Why Dark Souls is Different - VaatiVidya
"And if there's one true testament to what this game means then you should just look at the content and the community that's evolved around it. But ESSENTiALLY DARK SOULS, TOM ME IS WHAT A VIDEO GAME SHOULD STRIVE TO BE. BECAUSE THE GAMES HAVE THE POTENTIAL TO BE SOMETHING THAT NOTHING ELSE CAN.
GOOD GAMES REALIZE THAT YOU AREN'T JUST A VIEWER. YOU ARE A PLAYER. AND VERY CAREFULLY TRUE GAMES CAN BE DESIGNED SO THAT THE PLAYER DOESN'T JUST WITNESS THE WORLD AROUND THEM. THEY EXPERIENCE IT. "
VAATIVIDYA explains everything that is to Dark Souls. His videos are epic.
Why you should play Dark Souls
"Everyone says Dark Souls is hard... Many people think it's a game that punish you or make you miserable..
So many modern games think that you need help every single second. Dark Souls is designed to give you a world that's open and for you to explore & make your own discoveries. YES IT'S HARD> BUT ONLY BECAUSE IT'S UNKNOWN. It's an unfamiliar world with new rules and no one is telling you what to do.But that's ok. You are meant to play around with it. FIGURE IT OUT ON YOUR OWN
AS YOU PLAY AND EXPERIMENT WITH THE GAME YOU LEARN AND YOUR ABILITY AS A PLAYER INCREASES. WHAT SEEMED DIFFICULT TWO HOURS AGO IS NOW INCREDIBLY SIMPLE."
Dark Souls III - Why do we play?
Dark Souls Lore is fascinating. One of the best stories ever written in a game. And the most wonderful thing about it is that the story never uncovers to you entirely. It's not given to you. Not told to you directly. You have to find it. You have to find the secrets. There will be characters in the game that'll appear as your only friend or guide. But they'll deceive you. And perhaps you'll finish the game according to their choices which could be the wrong choice. You can hardly know what's right or wrong. But you make a decision. And you follow through it.
And the entire lore is never told or described. But it's written. And the most smallest detail can matter. For an instance a valuable information about a character may be in a descrition in a weapon. So through out everything you seek & reveal, you find something new.
This is the lore summarized. Watch the videos
Main lore surrounding Gwyn, Age of Fire, The Dark Soul & the Chosen one.
Dark Souls Story ► Gwyn & the First Flame [Part 1]
Dark Souls Story ► Gwyn & the Dark [Part 2]
But then again some of what he say may be not the truth. Most of The Dark Souls lore is build by it's community. That's another wondrous thing about dark souls. t's a puzzle. You have to solve it
I speculate that "Manus" is the furtive Pigmy and the chosen undead is a decendant of him. In DS2 it's somewhat confirmed. But again the cycle continues.
And then comes Dark Souls III.
Closing all the gaps & revealing most of the stuff. And breaking the cycle. Or will it continue?
I can post so many other stuff. But a lot of them are spoilers

I loved every bit of the game. The BEST GAME FOR ME RELEASED AFTER WITCHER 3.
My favourite games - Witcher 2 Assassin Of The Kings, Witcher 3 the wild hunt, Dark Souls 1, Dark Souls III. But don't like to compare them
මේ ඩාර්ක් සොයිල් එකේ වෙන්නේ මොකක්ද සහෝ
මුලක් මැදක් තේරුම් ගන්න බැ ඔය නයිට් ට කොහොමද ඔය වගේ අමුතු සත්තු ටිකක් හම්බවෙන්නේ
එතකොට මේ මනුස්සයා ෆයිට් කරන්නේ අපායට වාගේ ගිහින්ද
තව මම විඩියෝස් බලද්දී දැක්කා ගේම් ගහන උන් පලු යනකන් බයිනවා ඔය එකෙක්ව මරන්න බර වෙලාවක් යනවා කියලා
ඇයි බන් මෙච්චර අමාරු ගේම් දෙන්නේ

මේක විකිනෙනවාද බන් මෙච්චර අමාරු වෙද්දී
Simple put machan the world goes hollow. The Fire Fades.
First there was the age of ancient. The everlasting dragons. Everything was infinite, Dull & boring. Then came the fire. There were others creatures which were in the dark and three of them gathered 3 powerful souls from the flame and became powerful. ONE, "The furtive pigmy" collected the dark souls and hid.
The other 3 fought and defeated the dragons with the help of "Seath the scaleless" the betrayer. Then the age of fire/ gods began.
But after some time the fire began to fade. if the fire was gone the age of fire will end. The gods will loose their power. So they tried some stuff to keep the fire flaming blah blah blah and okkoma wage harigiye ne. So one lord, Gwyn Lord of cinder sacrificed his soul to keep the fire going. But it's not permanent. Oka karanna hethuwa thamai "the dark sign" in the people and they were going hollow (mad). eyala thamai apita attack karanne godak welawata.
Apeth dark sign eka thiyanawa but we are NOT HOLLOW. We are undead. We don't die but get close to hollowing.. Watch the videos for full descriptions. Okkoma mehema kiyanna amarui 
The story & lore is immense & puzzling. A one of the most brilliant ones ever created
Game eka echchara advertise karanne ne. Kata wachanen thamai godakma wikinenne. Like what I'm doing now. Man kiyanawa patta game eka. aye me wage gemak ne kiyala. so somebody picks it up. and then he becomes addictive. Mekata godak loku & loyal fan base ekak hadune oya nisa.
How the Dark Souls Series Grew from Underdog to Best Seller