Games like Last Question
Games like Last Question include Phasmophobia, Cyber Manhunt, Mount & Blade II: Bannerlord, Mount & Blade: Warband, and Return of the Obra Dinn. We matched them by the tags players give Last Question on Steam (RPG, Strategy, First-Person, Detective, and Mystery): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: VR · Psychological Horror · First-Person

Cyber Manhunt
Shared: RPG · Puzzle · Mystery

Mount & Blade II: Bannerlord
Shared: Strategy · RPG · Medieval

Mount & Blade: Warband
Shared: RPG · Strategy · Medieval

Return of the Obra Dinn
Shared: Detective · Mystery · Puzzle

Crusader Kings III
Shared: Strategy · RPG · Medieval

Garten of Banban
Shared: First-Person · VR · Psychological Horror

Kingdom Come: Deliverance II
Shared: RPG · First-Person · Medieval

CaseCracker
Shared: Detective · RPG · Psychological Horror

Kingdom Come: Deliverance
Shared: RPG · First-Person · Medieval

THE 4 SINS
Shared: RPG · Strategy · Puzzle

Unheard - Voices of Crime
Shared: Detective · Mystery · RPG

Subliminal
Shared: Psychological Horror · Mystery · First-Person

Buckshot Roulette
Shared: Strategy · First-Person · Psychological Horror

Crusader Kings II
Shared: Strategy · RPG · Medieval

Heroes' Vow: Three Kingdoms
Shared: Strategy · RPG · Simulation

Gorilla Tag
Shared: VR · First-Person · Psychological Horror

MiSide
Shared: Psychological Horror · First-Person · 3D

Murders on the Yangtze River
Shared: Detective · Puzzle · Mystery

Poppy Playtime
Shared: First-Person · Puzzle · Psychological Horror

Chinese Parents
Shared: RPG · Psychological Horror · Strategy

Firework
Shared: Mystery · Puzzle · Psychological Horror

Mandate Of Heaven
Shared: RPG · Strategy · Puzzle

Sanfu
Shared: RPG · Mystery · Puzzle