Overlord, Goblin Slayer Recommendations
In both, the story takes place in a heroic fantasy type world, and is centered around monsters.
The two MCs are very similar: they're overpowered, have dubious morals, and their real face is never shown. They also both help people for their own benefits. Then, they have a group of girls who swoon over them, but never took interest in it. Because of that, expect some gud fan service.
also woah violence
Both series have that DND feel and take place in a classic fantasy setting. Both have decent amounts of action and solid characters. Overlord is a bit darker than most fantasy anime and fits well alongside Goblin Slayer.
Lots of kick ass fight scenes along with very similar worlds. Goblin Slayer almost feels like an Overlord spin-off, that centers on a very eccentric adventurer and his party, instead of an all-powerful skeleton guy and his diabolical entourage.
In fact one could argue that Goblin Slayer has some elements that are so similar to Overlord, that the 2 creators were either inspired by the same elements, or Goblin Slayer's creator was inspired by Overlord.
Whatever the reason for the two shows being similar, that doesn't stop both of them from being kick ass and a lot of fun to watch.