General War/Conflict:
* The Crimson Nebula
* Echoes of the Fallen
* Iron Harvest
* The Siege of Acheron
* Beneath the Iron Sky
* Starfire Rising
* The Last Stand
Technology/Cyberpunk:
* Protocol Zero
* The Algorithm Wars
* Cyberflesh Requiem
* Machine's End
* Datableed
* The Glitch
* Code Red
Alien Invasion:
* Xenogenesis
* The Swarm
* Echoes of the Void
* The Harbinger
* Silent Invasion
* Alien Requiem
* Beyond the Horizon
Space Opera:
* The Starborn Rebellion
* The Galactic Storm
* Across the Void
* Destiny's Edge
* The Serpent's Bite
* A Million Suns
* The Last Fleet
Psychological/Internal Conflict:
* The Shadow Within
* Fractured Minds
* The Broken Pact
* The Price of Loyalty
* A Soldier's Heart
* The Ghost in the Machine
* The Memory Code
Tips for Choosing a Title:
* Consider your target audience. A title that works for a YA audience might not resonate with adult readers.
* Keep it short and memorable. A catchy title will stick in people's minds.
* Reflect the story's themes. The title should hint at the story's main ideas.
* Be unique and original. A unique title will help your story stand out.
* Read it aloud. Make sure the title sounds good when spoken.
Ultimately, the best title for your story will depend on the specific content and tone of your work. However, hopefully, this list provides a good starting point for brainstorming ideas.