Akiba's Trip: Undead and Undressed is on the cusp of being something special on nearly every front, but thorough mediocrity can be just as damning as incompetence. It exploits a few of my weaknesses – namely anime wackiness and widely customizable outfits – and anyone with similar vulnerabilities will find themselves with a similar added affection for it, but strictly on technical merit it leaves something to be desired with its short draw distance, load time issues, and overly simple systems. Unless you're a particular fan of the concept behind it, this is a decent but safely skippable title.
The Old Hunters is a bit on the short side and doesn't stray as far from the formula as it's proven it can, but what there is of it adds significantly to the depth of Bloodborne as a whole; Definitely recommended, especially for stalwart fans hungry for more, but nothing unmissable on its own.
Amplitude is a labor of love on its creator's part. What it has to offer is a testament to Harmonix's mastery of the genre: Its simple yet deeply challenging gameplay and psychedelic graphics have been honed to near-perfection, and each distinct part of every song carries its own, faithful patterns and challenges. The critical flaw is that there's simply not enough content to go around.
The Deadly Tower of Monsters is an honest effort to create a good game based around an intentionally bad fake movie that ends up partially successful. It brings some interesting twists to a repetitive formula, but the sparse use of them coupled with its lack of length leads you to believe something important was left on the cutting room floor.