Even if you don't play A5E (sometimes called "LevelUp 5E") it is backwards-compatible with your regular 5E D&D game.

This is a solid addition to the A5E books, and the approach taken evokes the nostalgia of 2nd Edition Psionics, without falling into the same pitfalls that previous editions did.

A lot of the character options add utility, so you might find this book works best in a game that isn't a straight dungeon crawl. A5E characters are generally more versatile than 5E ones (though not necessarily more powerful) so keep that in mind if you are using this with mainstream D&D.

There are some really good ideas in here, and the mechanics seem pretty solid. Unfortunately, it was advertised as a 5E and A5E supplement, and it is definitely NOT 5E compatible. At first I was seeing A5E language and figuring that I could do conversions on my own (although I didn't want to). However, soon it became obvious that the bulk of the player-facing material simply could not be converted. Paranormal Power uses mechanics that have no 5E equivalent: rattled, expertise dice, combat traditions, exertion, etc.

I like a lot of the content, I really do. I just wouldn’t have backed it if it were billed as an A5E only supplement. And it clearly is.

UPDATE: I reviewed this and complained that it was more A5E than 5E, giving it 3 stars. The publisher responded with an acknowledgment that it was A5E based and included some pretty comprehensive suggestion on how to make it backwards compatible to fit better with 5E. I appreciated that a lot and revised my rating to 4 stars. Were those suggestions to be included in the PDF, preferably in the main text but even as an appendix, I would give it 5 stars. If you primarily play A5E or are very comfortable converting A5E to 5E, buy this product!