Hey Mr t, big fan!
Which walls? Things always tend to look better in video. I definetely notice some of the textures are still super low res, should be easy enough to upscale them without affecting performance. I'll start working on them, let me know what you think in the next update.
Edit: added 9 new textures, spaceship and neon kinda styles. Adding detail to some old textures, next update should look nicer.