Games like Don't Die Dateless, Dummy!
Games like Don't Die Dateless, Dummy! include Tricolour Lovestory, Gaokao.Love.100Days, Our End of the World, 人间 The Lost We Lost, and Sakura Spirit. We matched them by the tags players give Don't Die Dateless, Dummy! on Steam (Nudity, Simulation, Adventure, Indie, and Dating Sim): closest matches first, and among equally close ones the better-known games.

Tricolour Lovestory
Shared: Nudity · Dating Sim · Simulation

Gaokao.Love.100Days
Shared: Nudity · Dating Sim · Simulation

Our End of the World
Shared: Nudity · Dating Sim · Visual Novel

人间 The Lost We Lost
Shared: Nudity · Simulation · Indie

Sakura Spirit
Shared: Nudity · Anime · Dating Sim

Miracle Snack Shop
Shared: Dating Sim · Simulation · Visual Novel

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

Dream Date
Shared: Nudity · Simulation · Indie

Crimson Imprint plus -Nonexistent Christmas-
Shared: Nudity · Indie · Visual Novel

Love Esquire - RPG/Dating Sim/Visual Novel
Shared: Dating Sim · Simulation · Nudity

Summer Memories
Shared: Nudity · Simulation · Anime

NEKOPARA Vol. 1
Shared: Nudity · Anime · Dating Sim

Epiphyllum in Love
Shared: Adventure · Indie · Dating Sim

Hush Hush - Only Your Love Can Save Them
Shared: Nudity · Dating Sim · Simulation

Maitetsu:Pure Station
Shared: Nudity · Anime · Adventure

Summer Pockets
Shared: Adventure · Visual Novel · Anime

NEKOPARA Vol. 0
Shared: Nudity · Anime · Visual Novel

NEKOPARA Vol. 2
Shared: Nudity · Anime · Dating Sim

Sakura Angels
Shared: Nudity · Anime · Dating Sim

Sunrider Academy
Shared: Nudity · Dating Sim · Simulation

West Sweety
Shared: Nudity · Simulation · Indie

TOGETHER BnB
Shared: Simulation · Dating Sim · Adventure

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

奇迹一刻 Surmount
Shared: Simulation · Adventure · Indie