Ketsui Arrange 1.5
Version 1.5 of Ketsui Arrange was released recently by trap15. You can read more about it here. Basically, weapons were rebalanced and suicide bullets were added at high rank which makes the game way harder.
I burned an EPROM of it, slapped it on my Ketsui board and recorded the first couple of times I played it.
// Jul 22 2012