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hmm what else..

 

Etrian Odyssey 1/2

 

FF:CC Ring of Fates is an ARPG that has a job system similar to that. Especially if you play the multi-player version.

FFIII DS has an extensive job system where you can keep changing jobs and leveling them up.

Dungeon Explorer lets you choose a race of fighter, which is effectively a "job". Great dundeon crawler with wi-fi co-op.

If you want to go a little older, and play emulated SNES on the DS, Seiken Densetsu 3 (Mana series) has one of the best job systems ever, but you can't change jobs once you select them.

 

I like Soma Bringer's class system the best, because if you choose one you can still have a few others that you can switch to.

I chose Battler with 2H sword, so I can switch to no weapon, dual swords or a hammer.

 

No, sorry. I think you're right keyaxer. I just played it again last year, and I thought it was on my DS, but I was mistaken. My bad.

Maybe if Chrono Trigger DS does well, there's hope SD3 will get the proper release it deserves outside Japan.