But… if you make your game just as a personal divertissement, with no economic purposes… How could they stop you?
If I take my pencil and draw Robin Hood as the fox of the Disney movie and put it on my personal website - specifying that the big D owns the copyright - so that people can see it and even download that picture, what can Disney do?
Is this a situation different from the game above?
As far as I know they´d still have the right to get it taken down if they´d want to. They´d be dicks, but they got the right to be dicks.
Big D: take that site down! You know what to do!
BB: But… but… they’re just fans, they’re having only fun, no profit from that!
Big D: What? Take that site down, and do it now!
BB: I quit! And go fick yourself!
Please tell us if it is good once you play it.
Probably not too different. It’s not unlikely that they’re both copyright infringement. Money is only relevant to the extent that the copyright owner might refrain from taking legal action if no money is being made.
Yes, they are well advised not to sell it but to provide it for free. If I were Disney, I would tolerate it and feel pleased, of course, but to my knowledge they use to be more strict in this regard, compared to George Lucas, especially when it comes to Star Wars. Lucas was very liberal toward fans.
You can love or hate what Lucas did with Star Wars during the 90s and 2000s. I personally disliked his second trilogy. Nonetheless, it’s a pity that he sold his company. The fact that LFL wasn’t Disney was one of the reasons why I liked it. This is not to say that I dislike Mickey Mouse! 
Having played for a while now, here some remarks about Hero-U:
The biggest point it has going for it (aside from the Sauerbraten) is its atmosphere: good-natured, light-hearted, perhaps a bit silly even, with the occasional earnest undercurrent here or there. Quite a difference from most of today’s games with their serious themes and ambiguous morals.
If I ever have time to play it, I surely will.
Not an adventure game, but maybe some (older) forum users are interested in it: The “Dragon’s Lair” trilogy is now available on Gog, including “Dragon’s Lair” 1 + 2 and “Space Ace”. The games are made by Don Bluth (maybe some of you have seen his films).
And if not, why haven´t you? They are the greatest!
I have, but not all.(*) And I’ve played the games back then. 
(*) Outstanding are “An American Tale” and “Titan A.E.”
That was my favourite along with the amazing Secret of NIMH.
Oh the memories… long wait times making a line just to play it at the arcades. And to think it was just a quicktime-press-the-right-buttons… but I loved it! 
Reminds me of the Telltale adventure games. So maybe we can consider the Dragon’s Lair games as adventure games …
So have you ever played it? I got it on steam a while ago.
Did the game ever make it to germany back in the day?
Yes, in several versions (for example the C64 version and the Arcade-to-PC conversion, Space Ace on the Amiga). They are actually animation movies where you have to press the right key/button in the right moment to let the movie continue.
You can play the DOS version online:
Good question. At that time I was too young, so I wasn’t allowed to enter one of the few arcade halls. But I’ve seen the arcade cabinet in Italy, so I assume that it was available in Germany too. It definitely was available as a Laserdisc game in Germany (and for several computer models like the Amiga).
Yeah the game is the original on steam, so I finished it. But some of the ports or completly different like the NES one, which is a super difficult side scroller.
The game was released in 1983 so that was before the law that banned the machines to halls only in 1985 (well, except in bavaria for some reason as we found out.)
Yes, the C64 port isn’t close to the arcade version too (beside the graphics). One of the problems are the limitations of the hardware: No computer or console at that time was able to present those animations. So obviously the developers were very creative. (And maybe there were licensing issues too.)
I can’t remember that we had (at my place) arcade halls open for kids - or at least an arcade cabinet somewhere in a public place. The only computer “thing” I knew at that time was our Atari 2600 that we are allowed to play only at special occasions. 
Yeah as I´ve said we had arcade machines everywhere even in the most remote looking wood cabin. I think I´ve seen at least 3 or 5 Rampage machines back in the day. 