Calpria is a free-to-play game that throws you into intense air battles. It has a classic arcade feel, but it’s certainly not an ordinary bullet hell shooter. Compared to other games in the genre, this title boasts a lot of depth, with a layered progression system. 

Fast-paced air combat 

In Calpria, you can customize and upgrade your aircraft, change weapons, and build different loadouts. There’s also a shop for unlocking stronger weapons, plus partner characters who assist in battle with unique skills such as slowing time or healing your aircraft for better survivability. 

There are various enemy types and boss fights for you to face. As you progress, enemies become stronger and more intelligent. While the depth sets it apart, the learning curve can feel overwhelming at first because of all the layered systems. 

Tactical gameplay experience 

In summary, Calpria is a fast-paced arcade shooter with impressive depth in weapons, upgrades, and partner systems. It offers plenty of variety in builds and gameplay, though its layered mechanics and learning curve may take time to fully get used to.