Games like Underwater abyss
Games like Underwater abyss include Mount & Blade II: Bannerlord, Kingdom Rush Vengeance - Tower Defense, Kingdom Rush - Tower Defense, Mount & Blade: Warband, and Kingdom Rush 5: Alliance TD. We matched them by the tags players give Underwater abyss on Steam (Strategy, Adventure, Massively Multiplayer, 4X, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

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

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · 2D · Singleplayer

Kingdom Rush - Tower Defense
Shared: Strategy · 2D · Singleplayer

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

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Singleplayer

Kingdom Rush Origins - Tower Defense
Shared: Strategy · 2D · Singleplayer

Sid Meier’s Civilization® VI
Shared: Strategy · 4X · Singleplayer

ENDLESS Legend™
Shared: Strategy · 4X · Singleplayer

Age of Empires II (Retired)
Shared: Strategy · Medieval · Singleplayer

Plants vs. Zombies GOTY Edition
Shared: Strategy · Singleplayer · 2D

The Escapists
Shared: Strategy · 2D · Singleplayer

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · 2D · Singleplayer

SANABI
Shared: Adventure · 2D Platformer · 2D

Stoneshard
Shared: Strategy · 2D · Adventure

Sid Meier's Civilization® V
Shared: Strategy · 4X · Singleplayer

Stellaris
Shared: Strategy · 4X · Singleplayer

Crusader Kings III
Shared: Strategy · Medieval · Singleplayer

Bloons TD 6
Shared: Strategy · Singleplayer · 2D

Idle Champions of the Forgotten Realms
Shared: Strategy · Adventure · Singleplayer

King's Bounty II
Shared: Strategy · Adventure · Medieval

Castle Crashers®
Shared: 2D · Adventure · Singleplayer

Mount & Blade
Shared: Strategy · Medieval · Adventure

Age of Wonders III
Shared: Strategy · 4X · Singleplayer

Where Winds Meet
Shared: Adventure · Singleplayer · Strategy