Sega Ages 2500 Series Vol. 6: Ichini no Tant-R to Bonanza Bros.

Sega Ages 2500 Series Vol. 6: Ichini no Tant-R to Bonanza Bros. (SEGA AGES 2500シリーズ Vol.6 イチニのタントアールとボナンザブラザーズ。) is the sixth entry in the Sega Ages 2500 series for the PlayStation 2. This game is the first compilation to be released as part of the Sega Ages 2500 series.

This release would later be localized and released internationally as part of Sega Classics Collection.