Advanced Daisenryaku (Japan)
Advanced Daisenryaku: Doitsu Dengeki Sakusen ( アドバンスド大戦略 ドイツ電撃作戦)is a turn-based military strategy game developed and published by Sega for the Mega Drive on June 17, 1991.
Bonanza Bros. is a platform game developed and published by Sega for the Mega Drive on May 17, 1991.
Sonic the Hedgehog is a platform game developed and published by Sega for the Mega Drive on July 26, 1991.
*Interesting that the yet-to-be-released Sonic receives the least prominent placement in this ad, but the fact that it was released in the USA before it was released in Japan is a good indicator of how little import Sega of Japan put on the character right from the start, and perhaps helps explain why Sonic has always found greater success outside of Japan.