The AppGameKit Visual Editor has today received a big update with new features, fixes and tweaks. You can read the full list of improvements here;
Colour key frames, scale key frames and forces can be edited for particles. Particles can now be scaled using the gripper on the bottom right of the selection box. Particles now support cut, copy, paste, duplicate, lock/unlock and send to back/front etc. Added enable / disable particles option to the Scene menu.