Garry's Mod vs Wurm Online
Garry's Mod
Garry's Mod is a sandbox game that brings back the hilarity and joy of being able to simply experiment and have fun. There aren't any objectives in this game; you are simply given the tools you need to play with... just like that time when you get your first Lego set. Being a purely community-driven game, Garry's Mod is quite the multiplayer game. You can hop into any of the created content or game modes and have fun with your friends, except for buy-to-play games in which you'll need to own the base game first. You can also opt to spend time to create new content that you can then share with the community. If you'd rather play in peace, you can play Garry's Mod offline too.Garry's Mod is definitely the sort of game that creative players would enjoy. The amount of stuff you can play there is astounding and of course, you are given absolute freedom to express yourself through your creations if you choose to do so.
Wurm Online
Wurm Online is a unique sandbox/adventure RPG that many has been touting as being the most realistic one ever. The game is not a solo survival game unlike Minecraft. Instead, you are given the opportunity to build your own settlement - literally from the ground up - and help it to grow. Being an MMO, you can enlist the help of other players to develop your settlement from being little more than a camp with a few shabby and lopsided huts into something that passing bandits might be eyeing hungrily at.There is also an adventure element in this game where you get to venture of into the wilderness to fight a variety of creatures to earn some loot and to level up. Players who enjoy clashing swords with their fellow players can even hop into a PvP world server to enjoy some open world PvP. That said, things will go by a bit slowly if you are playing the game alone though. Wurm Online is an MMO for a reason!
The game has nothing but a fun and great experience to offer to its players and best yet, it's free to play! You can opt for a premium membership if you like just so you can play on multiple servers but, as mentioned, the game can be enjoyed without having to spend a cent.