Garry's Mod No Goal, All Tools

There is no story to finish and no missions to clear. You load into a space with tools, spawn objects, and decide what happens next.

Building contraptions from spawned objects is a big part of the fun. You weld props together into vehicles and machines, from simple cars to rockets and catapults, then watch how they move, tip over, or hold together. The physics is a source of fun in itself.

You might start with no plan and lose hours to random play, stacking props into something that barely rolls, then rebuilding it to work a little better. That near-total freedom is what keeps people coming back.

Community mods, maps, and game modes are a big part of the game. In Trouble in Terrorist Town a detective tries to solve an online murder while criminals hide their killings, and in Prop Hunt you play hide-and-seek where people can become objects.

Playing with friends makes it more fun. Unplanned, funny situations happen, and posing characters in silly positions gives you something to do even if building is not your strength.

If you mostly join public servers, note that some online servers are nearly empty or of poor quality.