I understand it now. But
http://gloss.ouroborus.net/ is somewhat counter intuitive.
There is
Download section with gloss, gloss-raster, gloss-examples. Download associates only with downloads. Examples are examples and gloss should have been download/install lib. But not in Haskell!
Gloss is downloadable lib and it's also link to reference manual. I believe it's super clear to 20 y.o. Haskell veterans, which I am not ;-)
Btw, is there some real/usable documentation for gloss lib?
I got Picture because of Haskell for kids tutorial. Not because of hackage. It works instantly and it's a real joy for visual types (like me) to actually see what has been coded right away :)))))
Animate was real fun too. It works as it should work :)
I am having trouble with Play. Is there some 'play' tutorial in human form? Should I post my questions here or look for help on outside forums?
Yes I can easily imagine Haskell guru glancing over hackage understanding everything and writing gloss game in 15min. But others might need some more time, with lots of plain&simple words, how to examples etc.