Games like Fright Knight Legend
Games like Fright Knight Legend include RWBY: Grimm Eclipse, Lost Castle, ICEY, Split Fiction, and Asterix & Obelix XXL : Romastered. We matched them by the tags players give Fright Knight Legend on Steam (Beat 'em up, Side Scroller, 3D Platformer, Hack and Slash, and PvE): closest matches first, and among equally close ones the better-known games.

RWBY: Grimm Eclipse
Shared: Beat 'em up · Hack and Slash · Action-Adventure

Lost Castle
Shared: Beat 'em up · Side Scroller · Hack and Slash

ICEY
Shared: Side Scroller · Hack and Slash · Female Protagonist

Split Fiction
Shared: 3D Platformer · Female Protagonist · Action-Adventure

Asterix & Obelix XXL : Romastered
Shared: Beat 'em up · 3D Platformer · PvE

Kena: Bridge of Spirits
Shared: 3D Platformer · Action-Adventure · Female Protagonist

ONE PIECE: PIRATE WARRIORS 4
Shared: Beat 'em up · Hack and Slash · PvP

The Vagrant
Shared: Side Scroller · Female Protagonist · Hack and Slash

Alice: Madness Returns
Shared: 3D Platformer · Hack and Slash · Female Protagonist

GrandChase
Shared: PvE · PvP · Hack and Slash

Stellar Blade™
Shared: Hack and Slash · Female Protagonist · Action

Judgment
Shared: Beat 'em up · Action-Adventure · Hack and Slash

Deaths Door
Shared: 3D Platformer · Hack and Slash · Action-Adventure

Dead as Disco
Shared: Beat 'em up · Hack and Slash · PvE

Castle Crashers®
Shared: Beat 'em up · Hack and Slash · PvP

Soulstice
Shared: Hack and Slash · Female Protagonist · Action-Adventure

God of War Ragnarök
Shared: Hack and Slash · Action-Adventure · Action

Absolum
Shared: Beat 'em up · Side Scroller · Hack and Slash

Bladed fury
Shared: Hack and Slash · Side Scroller · Female Protagonist

Teenage Mutant Ninja Turtles: Shredder's Revenge
Shared: Beat 'em up · Side Scroller · Action-Adventure

Streets of Rage 4
Shared: Beat 'em up · Side Scroller · Action

Sonic Frontiers
Shared: 3D Platformer · Action-Adventure · 3D

Shank 2
Shared: Beat 'em up · Side Scroller · Hack and Slash

Like a Dragon: Ishin!
Shared: Beat 'em up · Hack and Slash · Action-Adventure