I think this menu type of interface is unsuitable for handhelds. Smartdata is working on a more PalmOS-style launcher, but this is what I had available at the time. The clock works, but there's no way to set it yet. This is the game Blackout. PicoGUI supports full multitasking.
Programs run in non-overlapping panels, designed with screen space economy in mind.
The 'x' button on the panelbar closes a program, the circular arrow rotates it, and the rectangular thing 'zooms' the panel.