digged around for few days, and found couple more games. these are not really best games, but has niche flavors if desperate for more.

shychess (puzzle, death gore)
カルミアスの島 (strategy, battle gore)
リョナラーの野望 (strategy, battle gore)
Under World ～地底の女神たち～ (rpg, battle gore)
俺のホムンクルスを越えてゆけ (spposedly violent pregnation and birth, amputation)