Games like Selenaut Quest
Games like Selenaut Quest include Warframe, DJMAX RESPECT V, Planes, Bullets and Vodka, PRAGMATA, and Crab Champions. We matched them by the tags players give Selenaut Quest on Steam (Action, Casual, Arcade, Third-Person Shooter, and Boomer Shooter): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Action · Third-Person Shooter · Looter Shooter

DJMAX RESPECT V
Shared: Casual · Action · Cute

Planes, Bullets and Vodka
Shared: Action · Casual · Arcade

PRAGMATA
Shared: Action · Third-Person Shooter · Cute

Crab Champions
Shared: Arcade · Looter Shooter · Third-Person Shooter

Escape From Duckov
Shared: Action · Looter Shooter · Third-Person Shooter

Cyberhunt
Shared: Action · Casual · Arcade

OUTRIDERS
Shared: Action · Looter Shooter · Third-Person Shooter

STAR WARS™ Battlefront™ II
Shared: Action · Third-Person Shooter · Space

Tom Clancy’s The Division™
Shared: Action · Third-Person Shooter · Looter Shooter

Risk of Rain 2
Shared: Third-Person Shooter · Action · Looter Shooter

Bit Blaster XL
Shared: Arcade · Shoot 'Em Up · Action

Puyo Puyo™ Tetris® 2
Shared: Casual · Action · Arcade

Warhammer 40,000: Space Marine 2
Shared: Action · Third-Person Shooter · Space

Tom Clancy’s The Division® 2
Shared: Looter Shooter · Third-Person Shooter · Action

HELLDIVERS™ 2
Shared: Third-Person Shooter · Action · Space

Ninja Kiwi Archive
Shared: Casual · Arcade · Action

The First Descendant
Shared: Third-Person Shooter · Looter Shooter · Action

MULLET MADJACK
Shared: Action · Arcade · Boomer Shooter

Senren * Banka
Shared: Third-Person Shooter · Casual · Cute

Airscape - The Fall of Gravity
Shared: Casual · Shoot 'Em Up · Arcade

Tomb Raider Game of the Year
Shared: Action · Third-Person Shooter · Singleplayer

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Third-Person Shooter · Space

Timberman
Shared: Casual · Action · Arcade