Awhile ago I wrote an entry about Japanese mergers and buy-outs of recent years. Here’s a recap:
Squaresoft (Final Fantasy, SaGa, Mana) and Enix (Dragon Quest, Soulblazer) merged to create Square Enix.
-Square Enix acquired Taito (Space Invaders, Arkanoid, Bubble Bobble) but maintains it as a separate brand.
Sammy (Guilty Gear, pachinko machines) acquired SEGA (Sonic, Phantasy Star, Yakuza) to form SEGA Sammy but SEGA is maintained as a separate brand.
Konami (Castlevania, Metal Gear, Contra) acquired Hudson Soft (Bonk, Bomberman) but maintains it as a separate brand.
Namco (Pac-Man, Tekken, Tales) merged with Bandai (Gundam, Digimon) to form Namco Bandai.
Technos (Double Dragon, Super Dodge Ball, River City Ransom) folded and its assets were acquired by Atlus (Shin Megami Tensei).
SNK (King of Fighters, Samurai Shodown, Metal Slug) was acquired by a pachinko company and then later regained its independence as SNK Playmore.
Since I wrote that entry, there have been more recent developments . . .
Namco Bandai acquired the video game aspect of Banpresto (Super Robot Wars, Summon Knight). Namco Bandai also acquired D3 Publisher (Puzzle Quest, licensed games).
Tecmo (Ninja Gaiden, Dead or Alive, Tecmo Bowl) merged with Koei (Romance of the Three Kingdoms, Dynasty Warriors) to form Tecmo Koei.
AND MOST INTERESTINGLY, Square Enix purchased a European publisher, Eidos (Tomb Raider, Hitman, Legacy of Kain), pending shareholder approval.