Here's a video where I make an example game in 10 minutes with the M484 Game Creation System:
First I made some very simple graphics with Paint; all of the images used are shown in the beginning. And after that I put together a working game prototype in 10 minutes.
The objects that are made here in quick succession are: the Player ship, a player bullet, an enemy alien, an enemy bullet, a "wall piece", and explosions for both the player and the enemy. Then with a few mouse clicks I link them together, and make 2 simple scripts to move things, and after this I make a simple game level, and hit "TEST GAME".
And that's it; the result is a working game prototype.
Pay attention to the "object category" that I choose for each object in the video. The "categories" are "pre-defined" object templates, which mainly affect the "collision checks" in the game. For example, player bullets automatically collide with the enemies, but never with the player. This saves a lot of time because we don't have to worry about setting any "collision conditions", all we have to do is to choose a pre-made "category" and that's it.
Also notice the "wall" that I make in the middle of the video...I define it as a "stop wall", meaning that it'll be a "standard wall" which stops player movement and kills bullets. Again, this is a pre-defined object type, which is intented for making obstacles. No hassle: works perfectly right away.