this is my game space is shoot and arrow keys move https://studio.code.org/projects/spritelab/Wz-2-DEdUt9aB_qaiVzcazzujDa5Wy1uhQcGx... in what simple ways can i imprive this concept?

how do i shoot

with the space bar

Try and add sound or muzzle flash maybe recoil

since cod.org has no wait block adding a mizzle flash is imposible but i can add sound

You aim movement could be less rigid. Try adding some momentum to your key presses and perhaps a little natural bob and sway to make things a bit more tricky.