Hello, guys. I am new here and need help.

Can I use:
http://www.dafont.com/black-castle.font
and
http://www.dafont.com/blackwood-castle.font
in my flash game free? Thx.

You should contact the authors to be sure about it.

Yep, its obvious. But if authors are not alive or etc...

Why did not specify the prices or conditions of the license? It is not comfortable and impractical for site users I think.

Every author has his/her own definition of personal and commercial use, so unfortunately, this is the only thing to do.

Sometimes you can find the information in the .zip file because the author added it (a "readme" text file, a pdf, anything).

If no information is available, you should try to contact the author (website, email address, contact form, social networks, anything).

If you REALLY can't contact the author or if he/she doesn't answer, well at least you tried. If the author gets back to you much later and complains, you can always show the email you sent for example.

Everything is written here: http://www.dafont.com/faq.php#copyright