In this episode of another indie 2D metroidvania kickstarter... with ninjas. Here we have Bushiden. I don't know what sets it apart from the rest but it looks cool enough so I backed it. I'm plugging here because it's reaching the deadline and it seems it's not going to make it. If you like it you have a chance to push it closer to the goal.
If it fails it will probably become a... *dry swallows* a hobby project. Just like my apple and worm game, which might be finished some time before the sun goes supernova.