Well, 'Overlord' might be comparable. They share the theme of characters having special powers and facing various challenges in a fantasy setting.
One manga that could be similar is 'Tokyo Ghoul'. It has elements of horror and supernatural creatures like in Monster Re.
One manga similar to Re:Monster could be 'That Time I Got Reincarnated as a Slime'. It has a similar theme of reincarnation and fantasy elements.
One manga similar to Re:Monster could be 'That Time I Got Reincarnated as a Slime'. It has a similar theme of a character being reborn in a fantasy world with unique abilities.
Some top manga similar to Re:Monster could be Overlord and That Time I Got Reincarnated as a Slime. They share elements of fantasy and character progression.
It depends on personal preference. If you like detailed descriptions and immersive reading, the novel might be for you. But if you enjoy visual storytelling, the manga could be better.
It's hard to say which is outright better. The Re Monster manga has the advantage of immediate visual impact, while the novels allow for a more immersive and comprehensive exploration of the story. You might want to try both and decide based on your own experience.
It depends on personal preference. Some people might like the manga for its visual appeal, while others might prefer the novel for the detailed descriptions and inner thoughts of the characters.
One manga similar to Re:Zero could be 'Sword Art Online'. Both have elements of fantasy, adventure, and complex character development.
One manga that could be similar is 'Erased'. Both have elements of time travel and character development.
One manga that could be similar is 'Overlord'. Both feature complex worlds and characters with evolving powers and storylines.