Yeah, I think Nintendo forces the limit (30 max.), since nobody would be concerned that "you get 'too much enjoyment for free' of baking a pizza 30 (or more, if you do it without closing the demo) times with mama". Like seriously? Nobody will launch that demo even 10 times, so the limit doesn't matter. But I find it annoying that there is a counter on the upper screen, makes me want to keep the demos untouched. But I heard there is a demo in Japan that can be launched THREE times and that really sucks (I think there was a time limit too). What's the point? It's not like it's the full version of the game.