Äußerst interessant: http://www.parapluesch.com/
Ganz nett: http://www.eyezmaze.com/grow/RPG/index.html
Zu letzterem hier die Lösung:
01010100011011110111011101101110000011010000101001010100011100
10011001010110010101110011000011010000101001000011011000010111
00110111010001101100011001010000110100001010010101110110000101
11010001100101011100100000110100001010010101000110111101110111
01100101011100100000110100001010010100100110111101100011011010
11011100110000110100001010010101000111001001100101011000010111
00110111010101110010011001010000110100001010010001000111010101
10111001100111011001010110111101101110