Hellbound

It is similar since both dramas story plot is circled in a phenomena which it deals with strange objects and creatures from beyond the earth that will eventually enter earth to deal with humans plus the genre talks about supernatural, thrill and suspense.

Also this two dramas are both similar in terms of the occupations of the characters in the series how it will be interconnected with the evil spirits and mysterious phenomena

A mysterious organization hides behind a legitimate front while operating on a supernatural level, condemning ordinary people. Spyder Human Resource Center runs the exact same playbook perfectly normal office on the outside, pure hell on the inside.

Hellbound is not the least bit romantic but the atmosphere is the same..
Dark
Gore
Supernatural
Mystery, fantasy and lore

We werent really sure what was going on but all is slowly revealed.

In DAS there are evil aliens and in Hellbound some monsters from hell and people struggling to fight them.

In both 'immoral' people start dying under mysterious circustances and people think it's God's judgement and this becomes a cult.

Both dramas offer intense plots, high-stakes survival scenarios, and deep psychological conflicts, much like Squid Game. Whether it’s battling against societal collapse, supernatural threats, or dystopian struggles, each series delivers gripping suspense, moral dilemmas, and unexpected twists that keep viewers on edge. If you enjoyed the tension, unpredictability, and raw human emotions of Squid Game, these shows will offer a similarly thrilling experience.

If you enjoyed season 2, then you would love the prequel (in case you didn't watch it already).
For people who like: Thriller, Mystery, Horror, Supernatural.

The concept of receiving a warning about one’s impending death mirrors Wish Your Death, where characters face fatal notifications.

Sweet Home and Hellbound are similar as:
- they both have a supernatural element to it
- they both are dark fantasy dramas
- they both adapted from a webtoon
- they both have strong female leads

hellhounds contain similar characters as both also revolve around the supernatural.
The differences may be in the entities and story background. These two films have a similar feel of terror, the atmosphere given is also the same.