Here are the games I've been able to find. Anymore? No US ones as far as I could see.
Jigsaw Puzzle DS - de Meguru Sekai Isan no Tabi (JP)
Yukkuri Tanoshimu Otona no Jigsaw Puzzle DS - Sekai no Meiga 1 (JP)
Yukkuri Tanoshimu Otona no Jigsaw Puzzle DS - Sekai no Meiga 2 (JP)
Puzzle Series - Jigsaw Puzzle - Koinu Mekuri Hen (JP)
Puzzle Series - Jigsaw Puzzle Oden Kun (JP)
Puzzle Series - Jigsaw Puzzle Oden Kun 2 (JP)
Jigsaw World - Daigekitou Jig-Battle Heroes (JP)
Jigsaw Puzzle DS - de Meguru Sekai Isan no Tabi (JP)
Yukkuri Tanoshimu Otona no Jigsaw Puzzle DS - Sekai no Meiga 1 (JP)
Yukkuri Tanoshimu Otona no Jigsaw Puzzle DS - Sekai no Meiga 2 (JP)
Puzzle Series - Jigsaw Puzzle - Koinu Mekuri Hen (JP)
Puzzle Series - Jigsaw Puzzle Oden Kun (JP)
Puzzle Series - Jigsaw Puzzle Oden Kun 2 (JP)
Jigsaw World - Daigekitou Jig-Battle Heroes (JP)