It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I'm playing EOB1 and I've problems with level 3: there's a invisible door with a Kurotoa but I can't open it because there is no button to open it.

Someone can help me whith this problem?