Cube World vs Salem
Cube World
Cube World is a voxel-based sandbox MMORPG that follows the same realm of thinking as Trove did. The game features an open world filled with plenty of new locations and hidden areas for you to discover wiht strategically-placed portals to hlep you get to different lands at a much more rapid pace. There are even dungeons you can conquer and dungeon bosses that you can defeat to get that sweet, sweet loot. For gear upgrades, you'll need platinum coins which can be earned by doing daily missions. As you venture across the world, you'll also get to use and hone your adventure skills, including but not limited to climbing, sailing, hand-gliding and more.Cube World has so much potential to be Trove's main rival but unfortunately, the game has apparently faded out once again to obscurity due to lack of updates. However, if you are interested to give the game a try, you can still play the game with the small group of loyal fans who are still sticking around in the game.
Salem
Salem is an old-school and somewhat obscure (but fun) sandbox MMORPG that unlike Wurm Online has a stronger emphasis on its in-depth crafting system and survival aspect rather than building.Similar to Wurm Online though, Salem is not a voxel-based game, but you are still able to mold the game environment through resource gathering, mining and digging in a way that reminds me of the currently-shelved MMORPG, EverQuest Next: Landmark. Of course, although not exactly the focus of the game, you can still build your homestead and the process is quite similar to Wurm Online except that it occurs at a much higher speed.
Not to mention, the game world in Salem is simply humongous to the point where it feels like an actual world. Salem also borrowed some features from ArcheAge where open-world PvP is the norm, so you'll need to be vigilant at all times, but players who kill and steal for no reason will be labelled as criminals and can be punished.
However, as good as it is despite being an indie MMO and all, Salem does have its fair share of flaws due to its low development budget. So, we'd recommend you to take a look at Salem without carrying along any high expectations. It's a pretty good MMORPG like Minecraft, but if you're expecting a Minecraft clone, you may end up disappointing yourself.