Wow it's getting more awesome each day!

Hi and welcome to Mythruna!
It would help if you provided some more info:
1) What options did you choose in the popup menu?
2) What's your graphics card?
3) In the extracted folder, was a file called error-[long number].log created?
4) What's your operating system? Windows?

To play the game you should first extract the .zip by right-clicking and selecting "unzip here" or "unzip to folder..." then just double-click on "Mythruna-20120627.exe" (Windows)

If I (e.g.) donate 10$ now and 40$ at some point in the future, would I get the benefits of the 50$-Level when the alpha version is released?

IMHO it's not a good idea to add a translator.
1) too much work, the database would also be too big
2) some language's sentence structure can be very different and you can't translate word by word (example: "Wie geht es dir?" ->"How goes it you?" (How are you? GER->ENG), "L'union européenne" -> "The union european" (the european union FRA->ENG))
3) The english language is one of the first foreign languages you learn at school (and many people speak it)

There is the possibility that defined sentences (e.g. menus, help screens, talking to NPCs...) can be translated but the chat system should/can not.

5 men, 12 women

Sounds (pun) awesome!

spirit realms and limbo planes

What is that exactly? Like some sort of temple where they raise adventurers from the dead?

Good replacement! The new trees look way more realistic

Why is it that all trees look beautiful except the one in singleplayer near the starting point at 534/508 which looks like a tree in "the other game"?

thats why you get teammates to help kill it. but you let them get it on low health and some of them die and then you finish it and get more gold because theres less people that survived hehehehe im evil and i hope it will be like this

Hehe then you would have to live in your own town because the other players would kick you out of theirs

This means you can't do the classic "Gee, I wonder if I can fight the dragon?"

Haven't we all done that?
So if I try killing the dragon with the 100th new Character, the people in the nearby town would say something like "Don't try killing the dragon, there were 99 guys recently and our city's graveyard's size doubled since then!" ?

Yes, unlimited slots within the space on your disk.

"Single Player" will take you to "New world", "continue last world", "load previous world"... you'll be able to have as many worlds as your disk will hold. 

Very good

Each world, as described above, can have multiple characters created for it but time will move forward while playing, even for the other characters.  So if you have characters Joe and Pete and play for two game days with Joe and then go to play with Pete, the world will be the same time it was when you stopped playing Joe, ie: two days later.  I hope that makes sense.

I have no plans to support going back in time to some previous save point.  I will probably support fully copying a world into another world... which would kind of be like forking time sort of.

I think that makes sense. Imagine a game slot where you already played with Joe who built a bridge and Pete who waited for Joe to finish and then built a tower on top of the bridge. Then you start with Dave at some global starting time and accidentally kill Joe. Then Pete would act as before and tries to build a tower in the air o_O (I hope that's what you were talking about ) Besides, you would have to record all the actions performed by all player Characters...