A first attempt... (32bit, 800*600).
Like I said: it's more an interactive story than an adventuregame. Thus expect lots of text and less of puzzles.
Story: Three students visits an orphanage located at 1-66 Lily Light Lane. The house has a bad reputation ever since several people dissapeared in it.
Build in 1926 ordered by Mr Sandersen, the mansion was first a place of joy. The man, Jacob, and his wife Abigail were both high-qualified doctors in neurology and biochemistry. They had one daughter: Eve, a beautiful sixteen year old girl with alas a seven year old mental state. To spend more time as a family her parents decided to quit their job.
Years passed in which the family Sandersen enjoyed pure happiness until destiny struck: both Mr as Mrs Sandersen disappeared. The only one who probably could have explained it was incapable: Eve.
Fortunately for Eve her parents left a will including what to do in such a situation. The mansion should be used as a small orphanage by a monastry so Eve could stay home. Once habited, children start to disappear...
Years later, the three students start to understand.