A Hat in Time is absolutely worth your time. If you love 3D platformers, and you haven't already played this, for the love of god, please give it a shot. This is one of those games where Switch should be your last choice though, as the concessions made to get it on Switch are a bummer, to say the least.
Overall, I enjoyed VA-11 HALL-A way more than I'd anticipated. It's a visual novel with a lot of heart, a heartwarming and emotional story, and some great aesthetics. It's also super cheap, so the relatively short play-time isn't so bad. I'd recommend giving it a go, even if you're not usually into VNs.
I'd wholeheartedly recommend Katamari Damacy. I was expecting to enjoy the experience, but to my surprise, I ended up loving it. It's unique, it's fun, and it's only £16. There is a lack of new content though, so if I'd already owned this game elsewhere, I'm not sure it'd be worth it. That said, since I hadn't played it before, I'd have definitely picked it up.
The World Ends With You is my favourite game of all time. The story is engaging and heartwarming, the characters are diverse and well-designed, and the gameplay is remarkably unique. Overall, TWEWY is a niche title that I think most fans of games like Final Fantasy and Kingdom Hearts will enjoy.
Calling Freedom Planet a Sonic clone would be unfair. It has unique mechanics, huge levels, and a larger focus on combat. Sometimes I found myself missing the blistering speed of classic Sonic titles, but I deeply appreciate and respect that Freedom Planet has its own identity. I'm looking forward to any improvements the sequel can bring. For only $15, it's worth checking out.
If you're a fan of Adventure Time, you'll probably enjoy this game. The writing is great, and the world is beautiful. With the series ending this year, it's a great bit of content to pad out the waiting time. If you're not a fan of Adventure Time, though, I wouldn't recommend it to you. Most of my enjoyment came from the references and writing, rather than the gameplay. The gameplay isn't bad, but the atmosphere of the game couldn't be better.
All-Star Fruit Racing is an interesting racer that, unfortunately, received a bad port on Switch. It could have been good, but the sacrifices made for the Switch version completely ruined the gameplay experience for me. If you're going to buy All-Star Fruit Racing, avoid the Switch version at all costs.
Overall, Paranautical Activity is a flawed experience. That said, it's still a great deal of fun, and acts as a great timekiller. If you're looking for a cheap game on Switch, there are better options, but Paranautical Activity certainly isn't the worst.