11 physics sandbox games on Steam with co-op or multiplayer, ranked by how many people are playing right now and how well they review. Part of Sandbox & building.
Which of these do we both own? →
| Game | Modes | Type | Rating | Playing now | Price |
|---|---|---|---|---|---|
| Garry's Mod | Co-op, PvP | Physics sandbox | 97% | 18,400 | $4.99 |
| Teardown | Co-op, PvP | Physics sandbox | 96% | 1,984 | $29.99 |
| Human Fall Flat | Co-op, PvP | Physics sandbox | 95% | 950 | $19.99 |
| Totally Accurate Battle Simulator | PvP, Local / split-screen | Physics sandbox | 98% | 1,299 | $6.79 |
| Brick Rigs | PvP, Single-player too | Physics sandbox | 95% | 983 | $13.99 |
| Trailmakers | Co-op, PvP | Physics sandbox | 92% | 903 | $24.99 |
| Wobbly Life | Co-op, Local / split-screen | Physics sandbox | 97% | 625 | $24.99 |
| Totally Accurate Battlegrounds | PvP | Physics sandbox | 88% | 121 | Free |
| Goat Simulator 3 | Co-op, Local / split-screen | Physics sandbox | 98% | 474 | $29.99 |
| Trine Enchanted Edition | Co-op, Local / split-screen | Physics sandbox | 96% | 16 | $2.99 |
| Totally Reliable Delivery Service | Co-op, Local / split-screen | Physics sandbox | 82% | 8 | $14.99 |
Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.