Usually when I program, I try to go through the steps in my head and think if I can change anything to make it simpler for the computer to go through the steps, taking into account that some methods (maybe something like collision detecting methods in Greenfoot) probably use more computing power than others.

It's not possible unless you know how it works by looking at the source code. Maybe you are having too many actors, or are using some very inefficient algorithms.

I thought that GreenfootImage uses java's BufferedImage and Graphics2D classes, and I thought that they use hardware acceleration where possible.

Many scenarios use drawString "correctly" too, but there actors are too small so the text is clipped, usually the important part, such as a score.

I thought that Java uses hardware acceleration. kensinkakh said: 4 fps xD. Ah that's y the intro took you 1/2 an hr. .. How did you manage to play if it took that long? It's probably 1 fps on my game b/c it's slightly graphic intense on the processor. Actually, Midori World runs much, much faster (I don't know, maybe something like 10-20 fps by eye) then Global Men on my computer. It is actually tolerable to play, while Global Men takes something like a few minutes to complete the first training level. I still wish I could get the full 60 FPS that it is supposed to be.