Games like Modiverse
Games like Modiverse include Rust, PUBG: BATTLEGROUNDS, Squad, ARK: Survival Ascended, and Deadside. We matched them by the tags players give Modiverse on Steam (Choose Your Own Adventure, FPS, Immersive Sim, Driving, and PvE): closest matches first, and among equally close ones the better-known games.

Rust
Shared: PvP · Survival · FPS

PUBG: BATTLEGROUNDS
Shared: FPS · PvP · Survival

Squad
Shared: FPS · PvP · PvE

ARK: Survival Ascended
Shared: Base Building · Survival · Building

Deadside
Shared: PvP · FPS · Base Building

Once Human
Shared: Survival · Building · Action

Bodycam
Shared: FPS · Immersive Sim · PvP

Hurtworld
Shared: FPS · PvP · Survival

GoreBox
Shared: FPS · PvE · PvP

Apex Legends™
Shared: FPS · PvP · First-Person

Stormworks: Build and Rescue
Shared: Immersive Sim · Base Building · Building

Rising Storm 2: Vietnam
Shared: FPS · Immersive Sim · PvP

Aimlabs
Shared: FPS · First-Person · Simulation

Kenshi
Shared: Immersive Sim · Survival · RPG

Last Oasis
Shared: Survival · PvP · Massively Multiplayer

7 Days to Die
Shared: Base Building · Survival · FPS

Garry's Mod
Shared: FPS · Building · First-Person

Car For Sale Simulator
Shared: Driving · Immersive Sim · FPS

Abiotic Factor
Shared: Base Building · Survival · FPS

WARDOGS
Shared: FPS · PvP · Action

Medieval Dynasty
Shared: Building · Immersive Sim · Base Building

Delta Force
Shared: FPS · PvP · Massively Multiplayer

House Flipper
Shared: Immersive Sim · Simulation · Building

Mon Bazou
Shared: Driving · Choose Your Own Adventure · Building