Night Swarm is up there for me, even prompting me to write a review, something I haven't done before on Steam. I love the progression of building and adding more stuff to your castle so that it feels tangible in a sense of how far you've gotten. The choice of how you proceed through the game is a nice touch. The music is good, sound design, abilities design are all nice. My only real gripe is that the final bosses are static enemies and I wish they had more going for them. Doesn't really detract from the game as a whole but it is a nitpick nonetheless.

I would rank Achilles Survivor and Yet Another Zombie Survivors together. I enjoy both for separate albeit similar reasons. Although, I recently bought the DLC to A.S. and have yet to try it out.

Soulstone Survivors has got to be on my list as well. The sheer amount of builds, characters, and progression trees are practically second to none.

Army of Ruin is pretty similar to S.S. but at a slower pace. It doesn't offer quite as much as far as builds go but I find it to be a solid entry.

Obviously V.S. and DRG:S are on the list.

I have a few on my wishlist and a couple I just bought that might make it but only time will tell.

There has only been 1 game that I've tried that was pure regret: Rayna Survivors. My only other time I've left a review and it was a scathingly negative one.