I can attest to many of the other games mentioned, but I haven’t seen Radiant Historia Perfect Chronolgy mentioned yet. It’s my favorite game on the 3DS. It does feature time travel as a mechanic and has unique battle mechanics.

If you’re up for SRPGs too (S meaning strategy), I wholeheartedly recommend Shin Megami Tensei Devil Survivor 1 + 2. The first one is overall a bit better.

To mix it up - I just finished Witcher 3 (Hearts of Stone)! It’s been the best content in the game so far.

Now, I’m playing Witcher 3 (Blood and Wine). Of course, I got to the new map and immediately started collecting all side quests there.