She arrives in, not quite a field with a few trees dotted around. There's a large pillar in front of her made from spirals of Granite and Marble. A few moment later two people fall from the sky. They land on their feet as if this is an ordinary occurrence.

One of them is wearing blue jeans, and a green shirt with a rather poofy hairdoo.

The other had mismatched eyes, one blue and one green. A wide poofy wizard hat with a red brim, a dress and matching pants that are pulsating with red magenta and blue and last but certainly not least what appear to be a giant pair of pink butterfly wings.

The man speaks first. "Hello there Traveller. Welcome to Terraria."

She squints blurrily at them from where she's still panting on the ground. Then she has another minor panic over the blurriness, and sits up and rubs her eyes and squints again. No, okay, it's getting better, she's not stranded half-blind in a foreign world for the second fucking time in her life.

She's stranded in a foreign world for the second time in her life, but this time she can see and also no one is trying to rape her. Yet.

...also, wait, was that English?

"Hi, what the fuck?"

The woman addresses the man. "I told you she didn't come the normal way." Then to April, "What exactly are you confused about? I assume several things."

"I am confused about so many things."

Slowly and stiffly, she sits up.

"...if the normal way to get here is not 'fall down a hill and then through a really uncomfortable amount of vacuum', then yeah, I did not get here the normal way."

"Normally people travel here on purpose. This is a world of magic and adventure known far and wide for it's challenge and it's rewards... or it was... it's been a long time since anyone came."

"I did not come here on purpose at all! I came from... I guess you could also call it a world of magic and adventure, but I don't think anybody ever went there hoping for challenge and rewards."

"Oh, what was it like? Did you enjoy your time there?"

...she hesitates for a second, wondering if she wants to tell the truth, wondering what the truth even is.

Then she shrugs and says flippantly, "Well, it beat dying."

"Most things do. That's not high praise though. Hopefully you'll like it better here."

"Speaking of dying if you touch that pillar it will serve as your recovery point. It will heal you and teleport you back here if you would be fatally injured."

"...how's it manage that?"

"It infuses you with the magic of this world enhancing your body and attuning it's recall abilities to your health. You'll also get some magical and physical abilities."

"You can't just leave it there." The woman shakes her head. The top of her hat flops about a bit. "Your body will be enhanced to let you run faster and jump higher. You'll also get an extrasensory awareness of your surroundings, a pocket dimension, and an ability to interact with the various magical objects you'll find around this world."

"See, this sounds nice, but I'm sort of reluctant to trust strange magic I've never heard of with something as important as my mortality. What if something goes wrong?"

"Only people who refused to touch the pillar have ever permanently died on Terraria so I'm not sure what exactly could go wrong."

"...hmm. Well, how many people touched the pillar?"

"Forty-seven thousand five hundred and twenty-six."

"And how many people didn't, and how many of those died?"

"Two thousand two hundred. Of those, one thousand seven hundred and eighty nine perished. One thousand five hundred and nine from various traps, two hundred and six from falling to their deaths and the remaining seventy-four from killing themselves by playing with weapons they found."

"Well, at least I know what to look out for."

She looks around at the trees, and past them at whatever else there is to see from here.

"What happens if you don't die? What's the challenge, what's the reward? Why do people come here?"

The most obvious landmark is the giant tree off in the distance. Otherwise it seems that there are trees scattered in most directions. In the distance in one direction they seem to be replaced by cactus. In the opposite it looks like they might be covered by snow. Calling the cactus direction north there's a much thicker forest almost akin to the north west. To the south are the snow covered trees. To the East are purple trees and to the west are red ones. 

"Oh, the monsters only show up after you touch the pillar. They're pretty dangerous too and you can't really hurt yourself with most of the weapons you find once you've touched the pillars. Just some of the explosives."