Here goes my suggestions:
Metroid Prime (overhead)
Metroid Prime (on ZDoom)
Metroid Prime (3D, but all from third third person view (camera from behind))
Metroid for Java-enabled cellphone
Metroid for Symbian
If someone ever wants to make a Metroid for Java-enabled cellphone, ask me and I’ll help for sure. I’ve been working better in spriting and I can test on a Nokia 6131 (240x320 screen, 1024 kb maximum applet size)
I never heard or saw the beta, anyways. As for the overview, it can be 3D too… Or 2.5D (2D sprites on a 3D background or 3D objects on a 2D background. I could give some examples if I remembered names…)