The following game took me about 6 hours to solve. It almost caused me to destroy my computer. You want your brain challenged here it is
http://server-admin.pwp.blueyonder.c...nochatgame.htm
Then the following game took me about 3 hours to solve
http://www.datacraft.co.jp/takagism/index_e.html
Good luck and
Enjoy
If you need any help on any of the rooms let me know. I will try to remember exactlly what I did to finally solve it