One of the most notable games for the Wonderswan, a shmup with a scoring system revolving around killing enemies and not dying or shielding. Because areas are completed when you finish off all their enemies, and the bonus is higher the faster they're completed, speed and score are similar goals for this shmup.
Don't be fooled by it being a handheld shmup, this game gets very hard near the end!
Information:
-Three difficulty levels, easy normal and hard
-Three 'weapons', wide straight and shield
-The longer you go without dying/shielding shots, the higher your base multiplier increases. It also temporarily increases when things have died recently.
-There is a trick with the wide and straight weapons - they run on timers but their timers are different, so if you use a specific rhythm to alternate between them you can shoot more shots than just sticking with one weapon alone, allowing you to kill faster and score higher.
-Bonus for clearing an area is higher the faster you finish off all its enemies
Videos:
Normal 1cc 57.2m:
Link to video
area 20 superplay movie:
Link to video
hard 58mil non-clear:
Link to video