The full list of upcoming games, pulled straight from Namco's Japanese site, is as follows:

  • Assault
  • Burning Force
  • Cosmo Gang the Puzzle (Remade into Pac-Attack outside Japan)
  • Cosmo Gang the Video
  • Cyber Sled
  • Dragon Buster
  • Dragon Saber
  • Dragon Spirit
  • Finest Hour
  • Galaga '88 (Ported to the TG16 as Galaga '90)
  • Genpei Toumaden (This is the predecessor of Samurai Ghost)
  • Hopping Mappy
  • Knuckle Heads
  • Mappy
  • Marvel Land
  • Numan Athletics
  • Pac-Mania
  • Phelios
  • Rolling Thunder
  • Sky Kid
  • Splatterhouse
  • Starblade
  • The Tower of Druaga
  • Wonder Momo
  • Xevious
  • Youkai Douchuuki

You might notice some of these titles are already available in Europe and the US. That's because Japan's arcade launch is a little bit different, consisting of these games:

  • Emeraldia
  • Gaplus
  • The Return of Ishtar (The sequel to The Tower of Druaga)
  • Solvalou
  • Space Harrier
  • Star Force

Another interesting note is that all Namco games, both released and upcoming, cost a whopping 800 Wii Points in Japan instead of 500! Funnily enough, the only game that isn't from Namco or Sega, Star Force, does cost 500 points.

Source: BNGI Japan