Not bad. I would add some instructions though. I do see improvement in your games so that's good, just keep working on it.

oh my lord why the hell our the arrow keys move and enter? idk if theirs a better way i mashed the keys on my keybored and thats the only one that worked. music is horrible. the graphics and animations of the game poor and the Pokemon thumbnail has nothing to do with this game

i should be able to use the spacebar to shoot the ufos i mean what if they were shooting back? and the music? oh god you need to change it. but if this is your first game its alright

Needs instructions. Don't assume someone will be able to figure out the controls on their own, even if they're as simple as this game's.

As for the energy blasts or whatever you're shooting out of that tank, are they supposed to curve the way they do? Shooting in the up or down direction, you'll never get a shot that's lined up with the actual cannon. Shooting to the left or right, you get a straight shot but at distance they also start to curve. I really can't tell if that's a bug or a feature.

It's cute and easy to play, but I hope I don't need to restart from level 1 even I pass the level 3 or later while game over( I hope I can restart from the specific level with enemy recover only, like I now play in level 3, when I fail, I can restart from level 3) .
But it's my opinion, maybe people think this setting is okay( always restart from level 1) and it is more challenging.
And I'm not sure why the bullet will stop in the scene( then you can push your bullet by the tank XD) when I go the highest and lowest place......
But it isn't always happened.
When I try to move other place( from highest or lowest place), the bullets work fine again.