Games like Decide 4 God
Games like Decide 4 God include No, I'm not a Human, The Test: Hypothesis Rising, Firework, The Test, and Zero Escape: Zero Time Dilemma. We matched them by the tags players give Decide 4 God on Steam (Visual Novel, Thriller, Multiple Endings, Psychological Horror, and Psychological): closest matches first, and among equally close ones the better-known games.

No, I'm not a Human
Shared: Psychological Horror · Horror · Multiple Endings

The Test: Hypothesis Rising
Shared: Multiple Endings · Visual Novel · Horror

Firework
Shared: Horror · Psychological Horror · Visual Novel

The Test
Shared: Multiple Endings · Psychological Horror · Psychological

Zero Escape: Zero Time Dilemma
Shared: Visual Novel · Psychological Horror · Mystery

STEINS;GATE
Shared: Visual Novel · Multiple Endings · Anime

Raging Loop
Shared: Visual Novel · Psychological Horror · Mystery

Zero Escape: The Nonary Games
Shared: Visual Novel · Multiple Endings · Psychological Horror

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Psychological Horror · Multiple Endings

The Coffin of Andy and Leyley
Shared: Visual Novel · Psychological · Multiple Endings

Return to Shironagasu Island
Shared: Visual Novel · Psychological Horror · Horror

The NOexistenceN of you AND me
Shared: Visual Novel · Multiple Endings · Psychological Horror

Milk inside a bag of milk inside a bag of milk
Shared: Visual Novel · Psychological Horror · Horror

Milk outside a bag of milk outside a bag of milk
Shared: Visual Novel · Psychological Horror · Multiple Endings

The Test: Final Revelation
Shared: Visual Novel · Multiple Endings · Psychological Horror

Danganronpa: Trigger Happy Havoc
Shared: Visual Novel · Psychological Horror · Mystery

Scarlet Hollow
Shared: Visual Novel · Psychological Horror · Horror

STEINS;GATE 0
Shared: Visual Novel · Multiple Endings · Anime

SIMULACRA
Shared: Visual Novel · Horror · Psychological Horror

Danganronpa 2: Goodbye Despair
Shared: Visual Novel · Psychological Horror · Mystery

AI: The Somnium Files
Shared: Visual Novel · Mystery · Multiple Endings

Poppy Playtime
Shared: Horror · Psychological Horror · Mystery

An alt girl for skoof
Shared: Visual Novel · Psychological Horror · Multiple Endings

Tiny Bunny
Shared: Visual Novel · Horror · Psychological Horror