Inside a Star-filled Sky is an infinite, recursive, tactical shooter by award-winning designer Jason Rohrer (Passage, Between). What if you could enter an object in a level and find a level inside of it? What if you could enter an object in that level and find another level inside of that?
What if you could change an enemy or a power-up from the inside? What if you could enter and change yourself? What if these levels inside levels inside levels went all the way down—and all the way up?
Inside a Star-filled Sky is a hard, procedurally-generated shmup built around this core concept.
Key features:

Unique recursive gameplay
Enter things—enemies, power-ups, and even yourself—to alter them for your tactical advantage
Procedurally generated levels, along with a massive bullet combo system, offer limitless tactical variety
Dozens of ways to approach each challenge—reflex your way through, blast your way through, or think your way through
Dynamic soundtrack is procedurally generated based on moment-to-moment gameplay
Plant your flag throughout an infinite level space to mark your discoveries, and see flags planted by others via a global flag server