I didn't see a thread for this yet. It's a sword fighting game, very similar to the saber fighting in JKA only with more depth and a lot more skill based. If you were any good at saber fighting in JKA, you can probably pick the game up pretty quick.
Here's a demonstration video that shows the basics. It's old, but pretty direct and to the point in terms of showing how the game works. The main changes to the game since then appear to be the addition of more sword types, characters, and polish:
You have some choice of ~4 different characters that determine what moves you have, similar to a typical 2D fighting game. You also get a choice of sword. Each sword has different bonuses and block styles, e.g. the foil (which I've been using a ton) does reduced damage with slashing attacks, but has a huge damage bonus the more stabby the hit was. Matching the right character with the right sword and playstyle has a huge impact on how well you can do (e.g. I pair it with a character that tends to do stabby lunge attacks and it owns everything). All characters have 3 different stances, and the stances have different numbers of maximum moves that can be chained together. Each attack increments the counter on all of the stances, e.g. if you attack in heavy stance then switch to medium, your next attack will be the second move in the medium chain. If you switch to light, then the 3rd attack will be the 3rd in the light chain. Switching back to heavy again will reset it to 0 because heavy most likely doesn't have an attack chain longer than 1.
As a side note, the game seems to be in pretty good condition in terms of polish. It's not crashing, runs smooth, has some nice jazzy/asian sounding fight music, and as long as pings are below ~100 the netcode appears to have a minimum of glitchyness.
Currently dirt cheap in a steam flash sale for $3. I picked it up yesterday for $7, and it seems to go on sale pretty regularly. I've only played it for about 4 hours so far, but it's one of the few games I've actually felt like recommending.
Here's some current gameplay footage:
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