Here's that view of the first level!!!

Firstly above is my second level that I added. My first level has also changed too so I'll put a picture in the next post.

I have added the following features -

I added sounds to different objects and actions by going Add> Add Sound getting a collection of wav files that I liked and them adding them to different events ie. when a bullet hits a clown it plays sound1.

I added an explosion event to the enemies by getting the explosion sprite from the various folder and then making it into an object that is destroyed when its animation ends. I then changed objClown so that it changed to objExplosion when it was hit by the bullet.

I made it so that the bullet is also destroyed when it hits the enemies because it was getting annoying that one bullet could take out a whole line of clowns. That was simply bullet object> collision event> destroy the instance

I set up a scoring system so that you get points for hitting clowns and lose them for hitting ghosts. In collision event between bullet and ghost/clown you make the action set the score, type in the desired score (I used 15 for clowns and -15 for ghosts) and remember to tick the relative box so it gets added to the score properly.

I changed the speed of the bullet to slightly faster by changing the vertical speed in the create event. Mine is vertical speed -12.

I went Add> Add Background and found a few nice ones for the first and second levels. I actually found that I had to edit the colours of some of my sprites so that they would show on the different backgrounds.

I made it so that when the clowns get to the bottom you die, and a message then the highscores shows up. It was the event Step and action <if an expression is true: y> (value at bottom of room), display a message, show highscores and end the game.

The clown get faster as they travel down because I went to the step event and put the action vertical speed. In the first level I made it 0.00005 and in the second 0.0005, remembering to tick the relative box both times.

The clowns start to look evil when they reach the centre and turn into skulls when they reach 3/4 of the way down. To achieve this I used Event> Step> if an expression is true: y> (required y value) ,change sprite into badClown or Death.

I added the ghost and gave it the same motion as the clown. The only difference is that if you hit the ghost you lose points.
I created a new object with no sprite and called it objController. I gave it Event> Step If the number of instances is a value put objClown and equal to 0 go to next room so that when there are 0 clowns you go to the next level.

That's it so far but I want to try and add everything on the sheet.

I made a very basic Space Invaders game in Game Maker. It only has three objects, the bear which is the shooter, the ghosts which are the enemies, and the bullet which is just a basic round thing that destroys the ghosts. I added a coloured background and an interesting formation of ghosts to make the game more visually effective. The bullet doesn't get destroyed when it hits a ghost so it is possible to take out several ghosts with one shot.

I found the task very easy, although the game is also very simple and could do with some improvements.