Had some fun with this one, graphics simple but quite effective, good fast gameplay, several tanks to try out, enemy AI felt nice too.
Says there's upgrading but I couldn't find it? Did I miss the button or not actually implemented yet?
Also as pointed out, some music/SFXs would definitely improve the experience.
What irks me a bit is that it's called "Laser" tanks but they're not really firing laser beams, more like plasma shots ><. Also no story but who needs that when it's tanks blasting each other o'clock yay!
Good work!