Which handheld system was Tetris DS released for?

Tetris DS was released for Nintendo DS.

Nintendo launched the puzzle game in 2006 as a system-specific Tetris entry built around the DS’s dual screens and touch controls. Its North American release was March 20, 2006, followed by launches in Australia, Europe, and Japan. The game supports local multiplayer for as many as ten players and originally offered online play for up to four through Nintendo Wi-Fi Connection.

The alternatives are systems from different hardware generations or manufacturers: PlayStation Portable was Sony’s rival handheld, Nintendo 3DS succeeded the DS family, and Game Boy Advance was Nintendo’s earlier handheld. None is the platform for which Tetris DS was developed and marketed.

Beyond its standard mode, Tetris DS includes themed variations inspired by Nintendo classics such as Super Mario Bros., The Legend of Zelda, Metroid, Donkey Kong, Balloon Fight, and Yoshi’s Cookie. That blend of familiar franchises and multiplayer helped the game earn strong reviews.