Shikhondo Series Games?

Is anyone aware of a list of the Shikhondo games? I was familiar with Soul Eater but today I found this trailer for Red Purgatory: https://www.youtube.com/watch?v=a_sb_PpI-eE

I also found a Steam release from this April for Youkai Rampage, which I didn't know existed: https://store.steampowered.com/app/2712480/Shikhondo_Youkai_Rampage/

Has DeerFarm produced more in the series? It's such a unique take on the genre.