Games like Vanguard Pack
Games like Vanguard Pack include PAYDAY 2, Raft, Barotrauma, Sons Of The Forest, and Bloons TD 6. We matched them by the tags players give Vanguard Pack on Steam (Downloadable Content): closest matches first, and among equally close ones the better-known games.

PAYDAY 2
Shared: Co-op · Single-player · Multi-player

Raft
Shared: Co-op · Single-player · Multi-player

Barotrauma
Shared: Co-op · Single-player · Multi-player

Sons Of The Forest
Shared: Co-op · Single-player · Multi-player

Bloons TD 6
Shared: Co-op · Single-player · Multi-player

Left 4 Dead 2
Shared: Co-op · Single-player · Multi-player

REMNANT II®
Shared: Co-op · Single-player · Multi-player

Remnant: From the Ashes
Shared: Co-op · Single-player · Multi-player

MONSTER HUNTER RISE
Shared: Co-op · Single-player · Action

Orcs Must Die! 2
Shared: Co-op · Single-player · Multi-player

PEAK
Shared: Co-op · Single-player · Multi-player

Company of Heroes 2
Shared: Co-op · Single-player · Strategy

Borderlands 2
Shared: Co-op · Single-player · Multi-player

Warhammer 40,000: Space Marine 2
Shared: Co-op · Single-player · Multi-player

PAYDAY™ The Heist
Shared: Co-op · Single-player · Multi-player

Schedule I
Shared: Co-op · Single-player · Multi-player

Orcs Must Die! 3
Shared: Co-op · Single-player · Multi-player

Bloons TD 5
Shared: Co-op · Single-player · Multi-player

Aliens: Fireteam Elite
Shared: Co-op · Single-player · Multi-player

Terraria
Shared: Co-op · Single-player · Multi-player

Devil May Cry 5
Shared: Single-player · Action · Multi-player

Pacify
Shared: Co-op · Single-player · Multi-player

Ready or Not
Shared: Co-op · Single-player · Multi-player

Resident Evil 5
Shared: Co-op · Single-player · Multi-player