Radium: Actually, PNG can do all that, too, except animations (which I see as a GOOD thing). Just save 'em as a palleted PNG image and you're good to go. (And technically, the MNG file format is pretty much animated PNG)

Batty: Love the comics. The tank reminds me of Dr. Despair's Cardboard Panzer referenced once in a while in Supermegatopia (Which I'd link to, except it's fairly outrageously mature). And VR Atari 2600 just sounds stupid enough to work. :-)