I'm just using Reborn as the basis for my Tactics Ogre review since it's definitely going to be/already is the definitive version.

Anyway, welcome to the deepest game of all time. There just isn't a game with more attention to detail than this one and the thing is, all those details matter. See Tactics Ogre is a game about fluidity, it's game that adapts to you as you adapt to it.

It puts you into situations not math problems.

One map chicken men are flying at you so you steal their purple dragon, you then take that purple dragon and use it in the next map to stunlock a random soldier before convincing that soldier to join you. Little custom, individualized moments of gameplay. True individualism in game mechanics.

Story-wise the game reacts to everything, everything you do is tracked. If a main character dies, the game continues, and every scene that would be with them is different. While all this is going you have genuinely the most detailed and thought out fantasy setting in maybe anything. It's the type of game to have it's own Wikipedia that it constantly updates over the course of the game. Tonally, the game is perfect. It avoids the sort overly sappy writing of SRPGs and also manages to have a lot of charm by not being incredibly grimdark.

It's something that no words could ever really do justice because it's ultimately a video game. You have to play it to really "get" it.