Powder Game (Dan-Ball) is strictly single-player. It's a falling-sand physics sandbox — you place elements (powder, water, fire, gas, rigid, elastic, etc.) and watch reactions. No network code exists.
| Game | Style | Players | Platform | Notes |
|---|---|---|---|---|
| Garry's Mod | Source Engine sandbox | 2–100+ | PC | Wiremod, E2, infinite contraptions. TTT, Prop Hunt, Sandbox modes. |
| Minecraft | Voxel survival/creative | 2–∞ | All | Redstone = logic circuits. Servers, realms, LAN. |
| Factorio | Factory automation | 2–100+ | PC | Co-op mega-bases. PvP scenarios. Deterministic sim. |
| Besiege | Physics machine builder | 2–4 (mods more) | PC/Console | Multiplayer mod (Besiege MP) for co-op building/battle. |
| People Playground | 2D ragdoll sandbox | Local only | PC | No native MP. Mods exist but janky. |
| Teardown | Voxel destruction/heist | 2–4 (mod) | PC | Multiplayer mod (Teardown MP) for co-op campaigns. |
| Noita | Roguelite falling-sand | 2 (mod) | PC | Co-op mod (Noita Together) — early but playable. |
Noita (with co-op mod) — actual falling-sand simulation, wand crafting, permadeath. Falling Sand Game clones on web (e.g., fallsand.vercel.app) — some have multiplayer forks on GitHub.