Games like Millennium Whisper
Games like Millennium Whisper include Stardew Valley, LoveChoice, Coffee Talk, Fields of Mistria, and Emily is Away Too. We matched them by the tags players give Millennium Whisper on Steam (Casual, RPG, Visual Novel, Pixel Graphics, and Dialogue Heavy): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Pixel Graphics · RPG · Relaxing

LoveChoice
Shared: Visual Novel · Dating Sim · Romance

Coffee Talk
Shared: Visual Novel · Pixel Graphics · Dialogue Heavy

Fields of Mistria
Shared: RPG · Pixel Graphics · Dating Sim

Emily is Away Too
Shared: Casual · Pixel Graphics · Dating Sim

DAVE THE DIVER
Shared: Casual · Pixel Graphics · RPG

Emily is Away <3
Shared: Casual · Dating Sim · Visual Novel

他人世界末 On-looker
Shared: Visual Novel · RPG · Dating Sim

AI2U: With You 'Til The End
Shared: Visual Novel · Artificial Intelligence · Romance

Tricolour Lovestory
Shared: Visual Novel · Dating Sim · Casual

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · RPG

Matchmaking Inc.
Shared: Casual · RPG · Dating Sim

Senren * Banka
Shared: Visual Novel · Dating Sim · Casual

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

Sun Haven
Shared: Pixel Graphics · RPG · Dating Sim

My Vow to My Liege
Shared: Visual Novel · RPG · Casual

Volcano Princess
Shared: RPG · Dating Sim · Visual Novel

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

STORY OF SEASONS: Friends of Mineral Town
Shared: Casual · RPG · Dating Sim

7 Days to End with You
Shared: Visual Novel · Typing · Romance

Coffee Talk Episode 2: Hibiscus & Butterfly
Shared: Dialogue Heavy · Visual Novel · Pixel Graphics

Fox Hime
Shared: Casual · Visual Novel · RPG

Enjoy Amoy&Sisters
Shared: RPG · Dating Sim · Visual Novel

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