Learn English has quite a few good, thematic, Crossword Puzzles that are accessible to Intermediate English Language Learners.

I’ve placed the link on my Intermediate English page under Word and Video Games.

They have a number of other language games on the same site if you scroll down.  I had a hard time really getting how some of them are played, though.   One nice thing they did have was they had embedded a couple of popular, and well-designed, word games, Thesaurus Scramble and Topic Tangle.  The only place I’ve seen these games, or copycat versions, have been on online arcade-like sites that are usually blocked by School District filters.  They might slip past the filters being embedded this way.