I played a little Armored Core IV after I, like many others, did some research into From Software's other games. Wasn't hugely into it, but that didn't stop me from trying VI when it released and I'm glad I did. It's a fantastic blend of Souls-like mechanics with fast mech action. It lacked most of the exploration aspect of FromSoft's other games that I love, but it made up for it with fun as hell bosses, huge environments, and an enticing story.