I wanna see some cool glow and particle effects to make the main character's awsome sprites justice

[pdamianik]

Similar to the concept art

[RiedleroD]

not gonna happen because of the way pyglet… ahem… doesn't handle effects.
effects as in glowing, lighting, shadows, etc.
the only effect-like stuff you can do in pure pyglet are transparency, rotation, scaling and technically also raw pixel manipulation.
You can't create effects in pyglet without accessing OpenGL directly. ofc you can always implement it yourself if you're brave enough. I'm not.
ofc if you mean something like particles, yeah, that's doable. we need a game first though. that's not very high priority rn, but particles will definitely be added some time in the future.