No, it can't natively, although you can use an Saturn emulator to play it on your Dreamcast. The issue is that the game play is immensely bad. It is probably due to their different architectures.
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You only play Dreamcast games like Sonic Adventure on your Sega Dreamcast instead of Sega Saturn.
no it cant the reason is wii is stronger and sega dreamcast is from sega and wii is for nintendo. gamecube games could be played on wii but never dreamcast.
== == == == The Dreamcast is not backwards compatible with earlier Sega game consoles, so it is not possible to play Sega CD games on a Dreamcast system. However, the Dreamcast's built in music CD player can probably play any audio CD tracks contained in a Sega CD game. Note that not all Sega CD games utilized CD audio tracks for music.
Find an old Sega Saturn, place it on top of your Playstation, put the games in the Saturn and presto! You're playing Saturn games on your Playstation!
it is unlikely since the dreamcast and ps2 were "fighting" each other