The video game Castlevania: Order of Ecclesia features a boss called "Rusalka", who attacks the player with water and giant waves.
The video game Quest for Glory 4 features a "rusalka" who the player (only as Paladin) can choose to set her soul to rest by destroying the spirit of the man who murdered her (found out to be a miserly wraith guarding his treasure).
One of Alexander Pushkin's short tragedies is titled "Rusalka". It features a young woman who, drowning herself after being jilted by her lover the prince, becomes the rusalkas' queen. The play is unfinished; the title was given by editors after Pushkin's death.