I've played through Pseudoregalia like a dozen times both casually and while intentionally skipping various items, so when this game came on my radar it had my full attention.
Luckily it totally delivers. It's reminiscant of Pseudo while still being fully its own thing. It's not QUITE to the same level of polish, particularly with the wall run (and also the menus), but it's close enough and the game has a strong foundation so the roughness around the edges doesn't significantly detract from the experience. The mechanics are honestly not THAT similar, though they might seem like it at first glance. Think of it like starting from the same idea and going in a different direction.
The level design is great and feels more open ended than Pseudo does. What I mean is that your moveset lends itself more to open ended problem solving rather than figuring out the specific set of inputs the developer wants you to do. In other words, it's easier to cheese stuff, but it feels good to do so. And Pseudo is by no means super rigid in that way, I just feel like this game provides even more freedom. There's also a lot of big open spaces and great use of verticality, including huge jumps which are super satisfying to pull off. Again, not something Pseudo was necessarily lacking, but this game feels less enclosed and features many huge structures, providing a feeling of vastness despite the game world being quite small.
The combat is... fine. Honestly I hate the combat in Pseudo, its the worst part of the game by far. In this game it's at least inoffensive, though I still could have done without it. Smartly there's no health system, instead you lose a small amount of currency when you get hit so you'll never have to repeat content because you died in battle. In fact it's impossible to die at all, even when falling into the void over and over. You'll just respawn on the last platform big platform you were standing on so you can try again.
I'm not without complaints though. Speaking of falling into the void, sometimes it takes a while to fall far enough to respawn. There is a fastfall button, but I wish there was a way to just immediately die and respawn, because some areas are really high up and long falls can last for 5 or more seconds. It may not sound that annoying but it really adds up in difficult sections and it seriously disrupts the flow of the game.
My other main complaint is with the controls. There are a lot of buttons in this game, so many that there's a special modifier key that can be held to alter some of the actions. To me this is inelegant and I feel like there are better solutions available. By the end of the game it's seriously hard to keep track of all the moves plus all the modified moves, and to pull them off in quick succesion can feel like doing a long combo in a fighting game. Throw in constantly adjusting the camera because it does not follow you at all, even through sharp corners, and it can quickly feel like frantic button mashing instead of controlled gameplay.
My last complaint is pretty inconsequential in the grand scheme of things but it's that most of the "power ups" don't really do anything. The most common collectible in the game are fairy wings. They increase your ammo bar so you can fire more shots before having to pause to recharge. That's it. After like the 3rd upgrade you basically never need to recharge, and there's 16 fairy wing upgrades in the game so the vast majority of them feel useless. The other collectible, aside from new abilities, are items that can be used to craft (buy) ability upgrades. These are very hit or miss. Most of them add minor benefits that don't really impact the game much, if at all, but some of them are extremely powerful and make the game substantially easier when used. That's not strictly a bad thing, all I'm saying is that when you find a powerup there's like an 80% chance that it won't noticeably change anything and that's lame.
tl;dr - if you like Pseudo you will like this game. Honestly I think $5 is underpriced, the quality along with the amount of content - not that the game is long, but it's not woefully short either - puts it comfortably in the $10 tier IMO.
