Konchu Monster - Battle Master Stadium is a Japanese Game Boy Advance game published by Caravan, likely an expansion or spin-off of Konchu Monster - Battle Master. It probably features the same creature-collecting and battling mechanics but focuses on stadium battles or tournaments.  Gameplay might involve strategic team building and competitive matches.  Caravan's role likely involves development and publishing for the Japanese market.

Konchu Monster - Battle Master Stadium (J)(Caravan)

Konami Krazy Racers (U)(Menace)