This is the problem I see: java.lang.IllegalArgumentException: java.io.FileNotFoundException: Could not find file: Player/White/player_1.png

Something weird happened to my machine - If I am running java (jboss) somewhere else the 2 instances fight for resource. I killed the other process and it seems to be ok now.

@Bourne if you have not looked into unity3d yet you might want to check it out. EA-Mythic (fairfax-va) uses this as their primary development tool and the best thing is it is 100% free for personal or commercial use (they get their money on the compile to iphone and compile to android modules they have) www.unity3d.com

Making a scrolling world that is not a memory hog can be a challenge - I have only made one scrolling game sort and it was not with greenfoot [url=http://www.lordhershey.com/oldSite/debtorman/index.html]debtorman[/url] , what I like about greenfoot is it makes me think outside of my usual box. I would like to make a platform game some time. You can still make a good platform game that does not scroll like this one [youtube]p7SzOzj4s74[/youtube] :)

On level 2 on the floor if you walk off the left of the screen you disappear, can't get the guy to come back - I think he has fallen into an endless void.

I need the pop up mines to adjust their behavior depending on the room color, right now I am working on the Boss Room. I think or that room I will adjust the game play to allow the user to use the mouse to shoot. Trying to come up with boss images...

If you could make it so you can drop a few extra planets on on the fly that would be really cool. like where you can pause simulation, add planet with size, vector, and mass and then hit the resume button to see how it all plays out.