Games like Supersize My Heart
Games like Supersize My Heart include Hatoful Boyfriend, Volcano Princess, Class of '09: The Re-Up, LoveChoice, and Tricolour Lovestory. We matched them by the tags players give Supersize My Heart on Steam (Visual Novel, Dating Sim, Simulation, Female Protagonist, and Otome): closest matches first, and among equally close ones the better-known games.

Hatoful Boyfriend
Shared: Visual Novel · Dating Sim · Female Protagonist

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

Class of '09: The Re-Up
Shared: Visual Novel · Female Protagonist · Simulation

LoveChoice
Shared: Dating Sim · Visual Novel · Story Rich

Tricolour Lovestory
Shared: Visual Novel · Dating Sim · Simulation

Lucy -The Eternity She Wished For-
Shared: Visual Novel · Dating Sim · Story Rich

Mirror 2: Project X
Shared: Visual Novel · Female Protagonist · Multiple Endings

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

Amnesia™: Memories
Shared: Visual Novel · Otome · Female Protagonist

Some Some Convenience Store
Shared: Visual Novel · Dating Sim · Simulation

Blood Code
Shared: Visual Novel · Dating Sim · Female Protagonist

Marco & The Galaxy Dragon
Shared: Visual Novel · Female Protagonist · Story Rich

Emily is Away <3
Shared: Dating Sim · Simulation · Multiple Endings

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

小白兔电商~Bunny e-Shop
Shared: Visual Novel · Dating Sim · Simulation

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

Folie Fatale
Shared: Visual Novel · Female Protagonist · Otome

Doki Doki Literature Club Plus!
Shared: Visual Novel · Dating Sim · Story Rich

Sweet Home
Shared: Visual Novel · Female Protagonist · Dating Sim

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

Emily is Away Too
Shared: Simulation · Dating Sim · Indie

Magical Princess
Shared: Multiple Endings · Female Protagonist · Simulation

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

CLANNAD
Shared: Visual Novel · Dating Sim · Story Rich