Games like NIPH
Games like NIPH include Hades, Hades II, Spelunky 2, Anomaly Agent, and Moonlighter. We matched them by the tags players give NIPH on Steam (2D Platformer, Roguelite, Action RPG, Procedural Generation, and Stylized): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Roguelite · Hack and Slash · Indie

Hades II
Shared: Roguelite · Action RPG · Hack and Slash

Spelunky 2
Shared: 2D Platformer · Perma Death · Difficult

Anomaly Agent
Shared: 2D Platformer · Side Scroller · Roguelite

Moonlighter
Shared: Roguelite · Hack and Slash · Action RPG

Lost Castle
Shared: Roguelite · Side Scroller · Hack and Slash

Heroes of Hammerwatch II
Shared: Action RPG · Roguelite · Procedural Generation

Wolcen: Lords of Mayhem
Shared: Action RPG · Hack and Slash · RPG

Realm of Ink
Shared: Roguelite · Stylized · Action RPG

The Binding of Isaac
Shared: Procedural Generation · Difficult · Indie

Prince of Persia The Lost Crown
Shared: 2D Platformer · Side Scroller · Action RPG

Last Epoch
Shared: Action RPG · Hack and Slash · RPG

Rogue Legacy 2
Shared: Roguelite · Difficult · Action

Torchlight II
Shared: Action RPG · Hack and Slash · Dungeon Crawler

Caveblazers
Shared: Roguelite · 2D Platformer · Procedural Generation

Noita
Shared: Difficult · Dungeon Crawler · Perma Death

Path of Exile 2
Shared: Action RPG · Hack and Slash · RPG

Afterimage
Shared: 2D Platformer · Side Scroller · Action RPG

30XX
Shared: 2D Platformer · Roguelite · Side Scroller

Grim Dawn
Shared: Action RPG · Hack and Slash · Dungeon Crawler

Blasphemous 2
Shared: 2D Platformer · Difficult · Side Scroller

Dungeons of Edera
Shared: Roguelite · Procedural Generation · Action RPG

Minecraft Dungeons
Shared: Action RPG · Hack and Slash · Dungeon Crawler

Chronicon
Shared: Action RPG · Procedural Generation · Hack and Slash