Betop developed several Game Boy adaptations of SNK and Takara fighting games, including King of the Monsters, King of the Monsters 2, and World Heroes 2 Jet (released as Nettou World Heroes 2 Jet in Japan). They also developed the Virtual Boy game Insmouse No Yakata, as well as Super Pachinko, Super Keirin, and Ball Bullet Gun. Their fighting game ports are closely associated with Takara's Nettou series, which includes the Battle Arena Toshinden franchise.
The technical execution of these 8-bit adaptations required significant downsizing of complex arcade assets. For
King of the Monsters (1993) and
King of the Monsters 2 (1994), the developer compressed large-scale kaiju sprites and wrestling mechanics to fit the monochrome screen of the Game Boy. This design philosophy carried over to
World Heroes 2 Jet (1995) and
Nettou World Heroes 2 Jet (1995), where the studio utilized super-deformed character designs. This aesthetic and mechanical approach directly influenced the broader Nettou fighting game line, which shared engine similarities and design principles with the handheld iterations of the
Battle Arena Toshinden franchise.
Beyond fighting games, the studio experimented with diverse genres and hardware.
Insmouse No Yakata (1995) leveraged the unique stereoscopic 3D capabilities of the Virtual Boy to deliver a first-person, real-time escape experience. For the Super Famicom,
Super Pachinko (1994) and
Super Keirin (1995) targeted niche Japanese sports and recreation markets, while
Ball Bullet Gun (1995) offered tactical, turn-based survival-game simulation. Together, these titles represent a specialized era of third-party console adaptation during the mid-1990s.