Games like High Risk
Games like High Risk include Cookie Clicker, Shelldiver, Nodebuster, Keep on Mining!, and Idle Champions of the Forgotten Realms. We matched them by the tags players give High Risk on Steam (Incremental, Idler, 2D, 1990's, and Management): closest matches first, and among equally close ones the better-known games.

Cookie Clicker
Shared: Incremental · Idler · Management

Shelldiver
Shared: Incremental · Idler · Management

Nodebuster
Shared: Incremental · Idler · 2D

Keep on Mining!
Shared: Incremental · Idler · Singleplayer

Idle Champions of the Forgotten Realms
Shared: Idler · Incremental · Management

A Game About Feeding A Black Hole
Shared: Incremental · Idler · 2D

Chef Knight
Shared: Incremental · Idler · Management

Scritchy Scratchy
Shared: Incremental · Idler · Resource Management

(the) Gnorp Apologue
Shared: Incremental · Idler · Management

Tower Wizard
Shared: Incremental · Idler · 2D

To The Core
Shared: Incremental · 2D · Casual

Bills Must Be Paid
Shared: Incremental · Idler · Management

Game Dev Tycoon
Shared: Management · 2D · Indie

Digseum
Shared: Incremental · Idler · Management

Oxygen Not Included
Shared: Resource Management · 2D · Management

Swag and Sorcery
Shared: Incremental · Management · 2D

Incredicer
Shared: Incremental · Idler · Indie

Dragon Cliff
Shared: Idler · Incremental · Management

Loot Loop
Shared: Incremental · Idler · Management

Lyca
Shared: Incremental · Idler · Management

Click and Conquer
Shared: Incremental · Idler · 2D

Keep on Mining! - Worlds
Shared: Incremental · Idler · Casual

Kiwi Clicker - Juiced Up
Shared: Incremental · Idler · Management

Fortune Mill
Shared: Incremental · Idler · Resource Management