The young man download the unknown app and imediately decided to open it to see what it was. 

'Lets see what kind of game are you.'

He tapped OPEN asd as soon as  the young man opened it the screen went completely black. The game didn't open and the screen didn't respond no matter how many times he touched it.

"What the f*ck?! Piece of shit...

"Shhhh..kept your voice down."

'Shit, what the f*uck? Why did the screen suddenly go black? Did this old phone have some kind of problem? F*ck, I should never have bought a phone at a pawn shop. Serves me right for being so stupid.'

*Ting* 

As the young man was beating himself up a sound came out of the phone. He imediately in grabbed it and looked at the screen.

' It made a sound. IItdefinitely made a sound right?"

*Ting*

The sound was heard again.

"Shhhh...

The shushing of someone was heard again but he didn't care. His phone was not broken.

' It really works! Thank god , I wasn't ripped off. But why did it suddenly go black?'

He continued looking at the black screen and waited until some text became visible. It some small text coming from the upper left side of the screen, like someone was writing something.

[Initiating...

Calibrating...

Registering new player... ]

[Welcome player number 20002!]

' Player 20002? Does this mean that there are another 20001 more players beside me?

Is this an online game?'

The gears in his head were turning , but he was to lazy to think anymore about this.

' Anyway, there is only one way to really know for sure and that is to play the game.'

He taped the screen that had a black background and the previous text in a purple color. As soon as he tapped it the screen went black once again, before in it appeared the image of what looked to be a console controller and below it it read 'Gamer' in bold script.

'Come on ,come on, go faster!'

*Ting*

'Finally!'

[New player recognized...

Creating scenario....

*Ting*

[Scenario created....

[As a new player you are required to complete the tutorial before you are deemed worthy.

Scenario: A swarm of slimes have wrecked havock on the first floor of the 'Infinite Dungen'. You, as an aspiring gamer can't let this chance slip by you.

Goal: Kill five slimes to complete the scenario.

Rewards: Novice weapon of choice, novice  armour, +1 level.]

He looked at the notifications on the screen and somewhat understood the type of game this was.

' It see now. This seems that this is some kind of dungeon simulator. The description is pretty standard, but this could be good.'

*Tap tap*

' It seems I can't skip the  tutorial , but that makes me want to play it more.Please don't disappoint me.'

And Instead the being disappointed he got more than he bargained for. At this moment his whole life changed.

*Flash*

A blinding light came out of the phone screen and then it disappeared as soon as it appeared taking along with it the young man. In the library no one seemed to have noticed what had happened right in front of them. No one  seemed to  have noticed the bright flash of light or the disappearance of the young man into thin air.

....

"What...

Jack opened his eyes, startled. 

"Huh what happened?Where...the hell am...

He couldn't finnish his thoughts as in front of him there appeared rock, rock and more rock. He looked around and he realized that he was no longer on the library but inside of a 3 m wide and 4 meter high tunnel.

*Ting*

A sound that he recognized was heard from his pocket. It was the sound of the game he was about to play.

' It can't be, can it?'

He reached his hand into his pocket and brought out the old smartphone he had bought. In the black background there had appeared some new text.

[Scenario initiated.

Good luck player 20002 ^_^]

A shiver passed threw him. He  once  again looked at his surroundings and was sure he wasn't anywhere near his house. He was now inside a tunnel and at every side there was a layer of rock. He tried to see if there was an exit but there was only a dim green light that was produced from the ceiling so the visibility was pretty low.

' This couldn't be real right? Is this some kind of truck my mind is playing in me?'

He got up,went to one side , then to aother and another tapping the rock wall until he tried everywhere. 

' It's not fake.  The wall is a solid rock layer. How the hell did I get here? Was I abducted? The way that this whole thing happened makes no sense. How can't I remember how I got here?

I'm sure that I was not drugged because I didn't eat or drinking anything since I left the house and with the number of people on the library no one could have taken my unconscious body. Did I come here on my own volition and really forgot everything?  The chances of that happening were slim to none , but not impossible. I remember to have read somewhere that there existed a flower that when you process it in the correct way you could make a very magical powder out of . If someone inhaled the powder then he would go into a trance during which he would follow any instruction and when the effect of the powder wore off he wouldn't remember nothing.

No no no, that's impossible! Why would someone do this to me? What would the gain by doing this?'

He turned his eyes to the phone on his hand and started at it without blinking.  A crazy idea was beginning to for in his head 

' Have I gone insane? Is there really a possibility that this is because of the game I downloaded? It's not possible. Maybe this is a lucid seem?'

......

Minutes passed and  he still hadn't found an explanation that pleased him, so he decided it was time to move on. 

"I'm just waisting brain cells thinking of what happened. For now I just have to find out if there is an exit. I have to be careful."

After making up his mind he continued moving forward into the dimly lit tunnel. He walked slowly and the only thing he heard was the echoing of his footsteps on the hard rocky ground. He walked with a slow pace and looked around him constantly for any type of clue to where the exit was , but didn't find anything. Instead, after having  walked for about 3 minutes a new sound was heard. It was like someone was slowly shaking a bottle of water.

'What is this sound? It's coming from the front? Is someone else here?'

He stopped on his track and listened for the sound. At first it was faint but the sound was coming closer and closer making him breath rapidly. His eyes were wide open, his nostrils flaring and all of his muscles tensed because he didn't know what was coming.

'I hope this is not a joke and I'm not a making a fool out of myself.'

After 20 seconds he saw something strange. The noise he had heard was not not by a human of by anything he knew, but ut caused by a blob of gelatinous stuff that moved forward slowly. The blob was  80 cm in width 40 cm in hight and it looked like someone had filled a big  light green transparent balloon with water.

"The fuck is that....

*Ting*

The phone rang again making the situation more tense. He slowly reached his hand to take it out of his pocket and read what was written in it with the corner of his eyes so as to not loose sight it the blob before him.

[Enemy encountered...

Slime....]

His stomach sank ,his breathing became more deep and his legs started to shake a little.

' So it was true. I'm really in a game and that is a slime.'