Games like Silver Island
Games like Silver Island include Hotline Miami, Mysteria ~Occult Shadows~, CARRION, Middle-earth: Shadow of War, and Notes of Soul. We matched them by the tags players give Silver Island on Steam (Action, Adventure, Indie, Gore, and Violent): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Indie · Violent

Mysteria ~Occult Shadows~
Shared: Action · Sexual Content · Adventure

CARRION
Shared: Gore · Action · Indie

Middle-earth: Shadow of War
Shared: Action · Adventure · RPG

Notes of Soul
Shared: Action · Adventure · Indie

G2 Fighter / 基因特工
Shared: Adventure · Action · Indie

LEWDAPOCALYPSE Hentai Evil
Shared: Action · Nudity · Sexual Content

OMON Simulator
Shared: Action · Indie · Nudity

Clive Barker's Hellraiser: Revival
Shared: Action · Gore · Nudity

Blasphemous
Shared: Gore · Indie · Violent

Grand Theft Auto: San Andreas – The Definitive Edition
Shared: Action · Sexual Content · Adventure

God of War
Shared: Action · Adventure · Violent

Fresh Body
Shared: Action · Indie · Adventure

Hotline Miami 2: Wrong Number
Shared: Gore · Action · Violent

Infernax
Shared: Action · Indie · Adventure

Dust: An Elysian Tail
Shared: Action · Indie · Adventure

Age of Barbarian Extended Cut
Shared: Action · Gore · Nudity

DOKA 2 KISHKI EDITION
Shared: Action · Gore · Violent

Bright Memory: Infinite
Shared: Action · Indie · Sexual Content

H-SNIPER: Middle East
Shared: Action · Indie · Adventure

Bloody Spell
Shared: Nudity · Sexual Content · Action

MO:Astray
Shared: Action · Indie · Adventure

Lucius
Shared: Adventure · Gore · Indie

Prodeus
Shared: Action · Gore · Indie