Don't know if it's your cup of tea, but for an idea could the game over animation have a vore alternative (Fionna breast/nipple vores or oral vores the player and that contributes to Fionna's breast expansion upon game over or the game over message simply reads that the player was absorbed/eaten by Fionna or perhaps just trapped/captured by her breasts)? Either way the game is fun and I hope to see more of it.