7 First Kisses (2016)

They both are reverse harems(one girl with multiple if guys in her life). The tones are very similar. But CAT4K is a cohabitation drama whereas 7FK is an office/endorsement drama.

A girl without dating experience get a kind of simulation how it feels to be courted by different types of man (or boys). The stories are only particular connected so it feels like watching little cliche scenes of romantic situations.

Both are short web dramas about a girl meeting a lot of cute guys who all look like male leads.
Eye candy but not much more to the story ~

I think they are similar on the parts of so many reincarnations and both have a lot of beautiful guys, hehe. But "Death's Game" is more mysterious, thriller (based on synopsis)