What is Landmark?
Landmark is a MMO sandbox game, where main feature is building. You can build interesting building using detailed smooth voxels (thanks to Voxel Farm engine). There so many posibilities. While in Minecraft everything is blocky, Landmark is much more detailed.
Game is still in development (now is closed beta), so many things can change.
Currently you can build, harvest, battle in custom PvP arenas, explore caves and explore awesome buildings.
In the future you can expect PvE, AI tools, deeper and more interesting caves, new worlds and many more (you can read blueprint on formus).
Game mechanics are base for Everquest Next, next gen MMORPG that will feature fully dynamic world and innovate mechanics. Players also can create buildings, that will be moved to EQN.
Of course, Landmark still will be a standalone game.
How you can play this game? You can buy early acces for 20$ (full game will be free to play), get a free 7-days key (many giveaways), or try luck in serious unlimited key giveaway.
I really recommend this game. Buildings are awesome, community is really good. Developers listen to players, game is going in the right direction.
It's still not optimized fully, so you can expect low FPS, but it will change in the future. Requiments are high because of innovate voxel system, only for 64bit systems.
https://www.landmarkthegame.com/home