Recently posted to YouTube was footage from a Resident Evil 2 tech demo for the good ol' GBA. Graphics look almost on-par with current gen DS titles. It's too bad that this demo never evolved into a complete game, but I guess you have to consider the cart size limitations at the time. Packing all those RE2 character models and voices onto one GBA cart would've been costly.
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[youtube]-htyTk-Ij3M[/youtube]