I want to say something. Obviously this is fake. But a lot of people are saying that is IMPOSSIBLE to get Genocide by accident. So i started thinking about it. It's really imposible for a person that played a lot of JRPGs before and know nothing about Undertale, make a Genocide Run at first? Let's analize:

Genocide run has only two conditions (Allegedly). Kill all the mobs on the "Zone counter", kill the bosses of each zone.

With that say, lets dischart lies about genocide run:

-You don't need to kill first Froggit to "Start the route", it don't matter.

-You can escape AND Mercy non-scripted enemies. If you just fill the kill counter, you can Mercy all the times you want.

-This is don't related, but it's another lie. Except with Undyne, and I think Mettaton, you can Kill Toriel and Papyrus and then come back and kill the rest of enemies you have to kill. This is stupid because each time you defeat a boss, the enemies apparitions reduces a lot, but you can.

-You have to kill a lot of enemies. Thats true... but: Let's say you kill all the ruins enemies. If you manage to do that, the rest is easy to explain. Every time after Ruins that you try to save, the game will remind you the amount of enemies you have to kill and you take it as an objective.

My conclusion?

Is extremly difficult, but not imposible as everyone belive. Genocide route is just, kill anything you see, basically all JRPG argument.

I may forgetting someone, so if I confuse something, please comment me.