much better

than the last one. Ur definatly making progress

Mabye have different barriers to select from a barrier menu? i cant think of much else to make it better

Okay

A few tips (I overlap with other reviewers on some of these):

-Make it so you have to re-press the space bar to place additional barriers. I would press it once and they would all be placed on top of each other (although I did get the hang of it eventually).
-There's a sometimes-glitch that, when you press the do-again button after winning, sometimes the cannon will just shoot at it instead of the game starting over.
-When I finally did get the barrier thing down, I discovered that the aliens tended to get stuck behind them and didn't really put up much of a challenge after that.
-The graphics were kind of odd. Little things - like being able to see the shell appear inside the cannon before it travels down the barrel - were sort of weird.
-Another glitch: for some odd reason, the data screen that pops up after winning is called level two, instead of being part of level one.
-Power-ups would be cool. Like different kinds of ammo, mines, more barriers; the works.
-Though not crucial, a story would be nice. There's no rule that says shooters have to have a story behind them, but it lends a sense of initiative - "Why We Fight."

Anyway, I think you're on to something. Since you went to the trouble of re-coding this whole thing, I figure you're really dedicated to this thing. Best of luck to you!

Nice

considering this is just a beta I really would like to suggest something:

Beta? : Considering the level of the progress I would say that this looks like an alpha :)

Bullet speed and firing animation: bullet speed is too low to really take care of those aliens... It's almost level 1 and it's not easy (level 1 suggests easy-to-do and something like a tutorial level). Try to do a better work for firing animation... che canno rotate but the bullet is still fired from the centre (better lowering the cannon? your choice).

Buttons: try to place a PAUSE/CONTINUE button and if possible a RESTART button with a confirmation choice to restart the game.

Animations: killing aliens means that they... uhm... explode? simply fall into the ground? they are simply vanishing... and it is somewhat crappy...

The idea is still good, you have to improve it!

Not half bad

this game has a lot of potential one bug i had was when i died the play again button did not work so i had to reload the game this game will be great once the full version comes out

not bad

a bit bland...but as you say its a beta.