What is your favorite game in Agarest series and why?

Mine is probably the first game, because that's where it all started (for Agarest, I know there are Spectral Souls and other similar games which were indirect predecessors to Agarest). It has the longest and most epic story (lasting through 5 generations), a lot of characters and there was a right degree of challenge (imo).

My personal favorite games are, in no particular order:

Pinstripe - Thomas Brush (my personal favorite's favorite haha)

The Last Guardian

Transformice - Atelier 801

TES:V Skyrim - Bethesda

Casino -Kaboo Casino online games

Rollercoaster Tycoon 2(and openRTC, a modified version with cheats ect.) - EA Games maybe??

Spore - EA + Maxis Entertainment (EA was the publisher if I remember)

The Last Guardian - Team Ico

Ori and The Blind Forest - Microsoft + Moon Studios

Roblox - Roblox Team(?) I like Roblox because of the creativity and generally polite players that usually help the clueless(like me haha) Plus it can educate kids how to use Lua and variables + the like.

While your list might be interesting, what does it have to do with Agarest series (topic name says - "favorite game in Agarest series")? The games you listed aren't even made by Idea Factory...