@machok
as far as i know there is Night Slashers Advance, which is just NS with a bunch of characters thrown in, i found a download for it, but i have not added it to the resources.
2 dreamcast versions
Then there is the Android version which is just the 2019 version of Wide-screen, before the balance changes by Toranks.
After that, MR, Life of End added Aska, Hong Hua and Ortega
in 2021 january Widescreen included those characters, and fixed a bunch of music bugs, fixed 4 some player functions that where broken
Life of End implemented those January changes, made a new game mode, and added 2 or 3 new enemies and the Screen officially calls the game Night Slashers Rebalance, some content seems to have been cut out.
A month later Widescreen had another update, more music bugs where fixed, wall climb bugs where fixed, Continue bug got fixed and the new characters got a dodge move.
Rebalance has a unpak problem, which makes fixing the bugs a bit difficult, and uncertain (at least for me)
Widescreen got an update in November that fixes a bunch of game breaking bugs and some aestetic improvements
Too Long, did not read:
There is Night Slashers Advanced
A chinese port with a fancy title screen, video link is lost
Night Slashers: Another Story, for the Dreamcast (very downgraded port)
Another Dreamcast port of which i only have a video
Android version (2019 widescreen)
Rebalanced 1.31
Night Slashers Wide Screen 23A
Night Slashers DX by Danno - coming later