Grim Dawn is a ARPG like Diablo, POE, or Torchlight and the spiritual succesor of Titan Quest.

• you can combine 2 classes which increases replayability extremely
  
• Faction System and bountys
  
• you have to make decisions and take the consequences
  
• atmospheric post apocalyptic steampunk world
  
• crafting whith a lot of recipes
  
• devotion system to individualise your character even more
  
• Loot, Loot and guess what..... loot
  
• Multiplayer
  
• no always on

• a few minor bugs and balancing problems but nothing that hurts

would say 4,5 out of 5 Stars
definitely worth the money