Well I'm not trying to backseat moderate but I think I could answer your question, but in future you may want to try the Frihost Support forum.
I don't think there is any restriction on file sizes and your hosting account is there to be used, if you keep your points up than don't worry about whether it is good or bad for Frihost, its good that you are posting.
You may want a moderator to answer your question officially though.
There is no problem with putting your self-made games on your website.
The only thing you need to be worried about in this case is the bandwidth limit of 10GB per month. (which you won't reach with a few downloads)
Do you mean I will reach it or won`t???
Its no problem if I wont reach it, actually that would be realy great.
But I know I will use up my bandwith realy fast.
But how long time will it take before I get my account? I think I have posted 5 quality posts now... And I have over 10 points.
You need to request it on your account page and it should take a few days to be handled.
About your question about bandwidth, you will most likely not reach the bandwidth limit. If you offer a 5MB file for download, it needs to be downloaded 2000 times in one month to reach 10GB.