when my ds1 was 6 we had a "theme park" party (he has Aspergers and was VERY specific about what he wanted)
we had it at home, about 25 kids came and our boys made posters and signs to go all over the house advertising the various activities
we had an "arcade room" in the lounge - whatever of the boys' stuff seemed to fit that scheme went in there - sweetie grabber, pinball machine, mini bowling alley, meccano ferris wheel, hotwheels tracks, Knex roller coaster
we had an art/craft room where we covered one of the walls as a grafitti wall and let them have loads of glue, glitter, pens, feathers, confetti etc
we had a "hot dog stand" outside - barbecue, sausages in rolls etc
we had the firepit going and they were toasting marshmallows
we had "candy-floss corner" in the garden making candy floss and facepainting
only a few proper "games"
bubble machine and music
it was fab