Games like Demonheart: The Ice Demon
Games like Demonheart: The Ice Demon include Our Life: Beginnings & Always, Amnesia™: Memories, 私のリアルは充実しすぎている フルボイス版, LoveChoice, and Volcano Princess. We matched them by the tags players give Demonheart: The Ice Demon on Steam (Visual Novel, Otome, Multiple Endings, Dating Sim, and Romance): closest matches first, and among equally close ones the better-known games.

Our Life: Beginnings & Always
Shared: Visual Novel · Romance · Dating Sim

Amnesia™: Memories
Shared: Visual Novel · Otome · Dating Sim

私のリアルは充実しすぎている フルボイス版
Shared: Otome · Visual Novel · Female Protagonist

LoveChoice
Shared: Dating Sim · Visual Novel · Romance

Volcano Princess
Shared: Multiple Endings · Dating Sim · Female Protagonist

Senren * Banka
Shared: Visual Novel · Dating Sim · Multiple Endings

Love Is All Around
Shared: Dating Sim · Visual Novel · Romance

Hatoful Boyfriend
Shared: Visual Novel · Dating Sim · Otome

月华辉映之刻
Shared: Otome · Visual Novel · Dating Sim

Love Curse: Find Your Soulmate
Shared: Visual Novel · Dating Sim · Female Protagonist

My Vow to My Liege
Shared: Otome · Visual Novel · Romance

BAD END THEATER
Shared: Visual Novel · Multiple Endings · LGBTQ+

1 to 1 humanoid edible toys
Shared: Visual Novel · Dating Sim · Multiple Endings

Sweet Home
Shared: Visual Novel · Female Protagonist · LGBTQ+

Folie Fatale
Shared: Otome · Visual Novel · Female Protagonist

OZMAFIA!!
Shared: Visual Novel · Otome · Romance

Demonheart
Shared: Visual Novel · Otome · Multiple Endings

Blood Code
Shared: Visual Novel · Otome · Romance

ATRI -My Dear Moments-
Shared: Visual Novel · Romance · Dating Sim

Gaokao.Love.100Days
Shared: Visual Novel · Dating Sim · Multiple Endings

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Multiple Endings · Dating Sim

Magical Princess
Shared: Multiple Endings · Female Protagonist · Dating Sim

The Three Kingdoms: Rebirth
Shared: Visual Novel · Dating Sim · Romance

Hakuoki: Kyoto Winds
Shared: Visual Novel · Otome · Romance