Ok... So I have a few questions concerning the games
you need:
 1) What "quality" do you require ? 
      I mean: I can create games but no games of a
      commercial quality I'm afraid 

 (at least not as good
      as Ben Yoris's new Studio will do 

)
      But I can create/port games... So just tell me:
      If you don't want such high quality games, I
      can make it... if you need high (ie.: commercial)
      quality games, I won't do it ;=)
 2) If I have understand correctly, these games are
     targeted to the new STB/TNT market: so the
     screen shoudn't exceed 640x480 ?
 3) Should the game work on full-screen or window
      mode ?
 4) Do you have some game types preferences ? 

      (I am working on a PuyoPuyo style game for the
      GBA: I could work on the MorphOS version in
      parallel...)
Regards,
Leo.