Okaeri! Chibi-Robo! Happy Rich Oosouji

Okaeri! Chibi-Robo! Happy Richie Ōsōji! or おかえり！ちびロボ！ハッピーリッチー大そうじ literally meaning, "Welcome home Chibi-Robo! Happy, Rich Big Sweep" is a Nintendo DS game that was released exclusively in Japan on July 23rd, 2009. The game revolves around a Chibi-Robo who helps out with a now grown Jenny Sanderson from Chibi-Robo! Plug Into Adventure! who now has a family of her own.

Source: Chibi-Robo wiki

Has an english fan translation.