Games like Scionide
Games like Scionide include PUBG: BATTLEGROUNDS, Titanfall® 2, ARC Raiders, HELLDIVERS™ 2, and Marathon. We matched them by the tags players give Scionide on Steam (Arena Shooter, Sci-fi, FPS, Third-Person Shooter, and PvE): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: FPS · Shooter · PvP

Titanfall® 2
Shared: FPS · Sci-fi · Shooter

ARC Raiders
Shared: Third-Person Shooter · PvP · PvE

HELLDIVERS™ 2
Shared: Third-Person Shooter · PvE · Sci-fi

Marathon
Shared: FPS · Sci-fi · PvP

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

STAR WARS™ Battlefront™ II
Shared: Sci-fi · Third-Person Shooter · Shooter

Apex Legends™
Shared: FPS · PvP · Shooter

Black Mesa
Shared: FPS · Sci-fi · Shooter

Deep Rock Galactic
Shared: FPS · PvE · Shooter

Half-Life 2
Shared: FPS · Sci-fi · Shooter

THE FINALS
Shared: FPS · PvP · Shooter

Aimlabs
Shared: FPS · Shooter · Third-Person Shooter

FragPunk
Shared: FPS · PvP · Shooter

Pixel Gun 3D: PC Edition
Shared: PvP · FPS · Shooter

The Callisto Protocol™
Shared: Sci-fi · Third-Person Shooter · Shooter

Warhammer 40,000: Space Marine 2
Shared: Third-Person Shooter · PvE · Sci-fi

Halo Infinite
Shared: FPS · Sci-fi · Shooter

Starship Troopers: Extermination
Shared: FPS · Sci-fi · First-Person

Battlefield™ 2042
Shared: FPS · Shooter · PvP

Destiny 2
Shared: FPS · PvE · PvP

Half-Life 2: Deathmatch
Shared: FPS · Sci-fi · Shooter

Halo: The Master Chief Collection
Shared: FPS · Sci-fi · Shooter

Call of Duty®
Shared: FPS · Shooter · First-Person