DBPro was something like 2002-2003, Starwraith was out long before DBPro, and is written in a somewhat extended version of DBClassic.
I'd say Mono and Duo are musts, so much fun and people will like to see the professional finish it has, nice menus and sounds and everything. Plus the obvious one that they don't rely on detailed graphics, sends out the message that it's ok if your player ship looks like a power button, as long as the game is fun
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The demo of Carnage would be quite neat as well, although it is pretty graphic, you might have concerns about age groups etc - but for a fast action game that looks and plays great, Carnage is about the best I've seen.
Some puzzle games would be pretty handy as well, like Wordtrix and half the entries from the old Puzzle Game compo. I think that DBPro makes an excellent platform for casual games, I'm surprised that more people don't use it for that purpose.
