My time with Omno was pleasant, and while I don't think it's a life-changing experience by any means, it does have a certain life-affirming quality to it. Simply put, Omno is an enjoyable journey through a magical world, where so many other games would fill such a setting with chaos.
I like playing Curved Space, but I found it most enjoyable when played in fairly short bursts. The ideas and the gameplay are both good, but the level design runs counter to the fast-paced gameplay when you simply can't find an enemy. The music slaps though, so that's a nice touch if you do find yourself enamoured with the strange mix of impossible spaces and bug shooting.
From its compelling story, to its wild enemy designs and combat, I'm kind of in awe of Scarlet Nexus. Where Bandai Namco games often have a niche appeal, I've got no reservations about recommending Scarlet Nexus. I'd definitely suggest skipping a lot of the side stories, but everything else here is the kind of anime-infused greatness that will appeal to nearly everyone.
Roguebook is a game that will feel crushingly familiar at first, but reveals itself to be more nuanced and interesting the more you play it. It's definitely a fun game, and while it feels like there have been more original roguelike deckbuilders recently, Roguebook is still good fun, and there's enough here to keep you going for a long time if it clicks with you.
The Ninja Gaiden Master Collection is a solid collection of three games that are enjoyable, but are also showing their age. If you're coming here for a challenge, then you'll likely be very happy with what you find, but times have changed a lot since these games released. As long as you're fine with that, then you should pick up the mantle of the Hayabusa Clan and start chopping off arms.
Earth Defense Force: World Brothers is a genuine joy to play and a fun spinoff from the main series. EDF is a silly series even with its dark undertones, but World Brothers is a lot more light-hearted, and could well lead to a lot of new players looking forward to Earth Defense Force 6.
Subnautica: Below Zero is a masterfully horrific experience that encourages you to push on despite your fears. It's a fine balancing act of the horrors you'll face underwater and the rewards you can get for evading them. It's really very hard, but it's also really very good.
Overall, I like Dandy Ace a fair bit, but the story doesn't do quite enough to drive you to do more runs, and there were a few times when things felt grossly unfair due to the sheer volume of enemies that some rooms spit at you. The card combination system is wonderful to use though, and that'll keep mechanically-minded players involved for a fair while with Dandy Ace.