Hoshi Saga 2
http://www.nekogames.jp/mt/2007/09/2.html

Yoshio Ishii has just released a sequel to his enormously popular
puzzle game from May, thus creating a new entry in what will
hopefully be a continued series of games bearing the Hoshi Saga
name. In Hoshi Saga 2, the goal remains the same: find the star in
each level. Some you will find by clicking, others by moving the
mouse. You will have to approach each one with an open mind if you
are to find them all.
There are 36 new levels to discover, and the level numbers pick up
right where the first game leaves off. None of them are very
difficult, but some may stump you for a bit until you figure out
what it is you need to do.
Hoshi Saga 1
http://www.sgforums.com/?action=thread_display&thread_id=255790