>>35727220Dragon Quest is closest to classic Pokemon in terms of game mechanics and tone. It's one of the simplest JRPGs out there, but somehow the series does a lot more with a lot less than Pokemon, which might appeal to you if you don't like the shonen anime direction the new Pokemon games have gone in. The Dragon Quest Monsters games are straight up Pokemon clones, though only the GB games reach Pokemon's levels of quality.
I'd recommend starting with 7 or 8, as they're two of the best in the series and available for 3DS. Remakes 4-6 are available on DS if you want to play in chronological order, but 6 is almost impossible to find. 1-3 are likely to be too dated for you. 8 has a superior version on PS2, while 7's 3DS version is more accessible than the PS1 oriiginal. If you aren't a fan of the remakes' ""colorful"" localization, you could always play the originals, though 4-6 will need translation patches.