Square Enix DRAGON QUEST MONSTERS: The Dark Prince

Now he must become a monster tamer and raise a battle-hardened army.
The hunt for rank monsters takes Psaro through the diverse landscapes of Nadiria, which change with the changing seasons. Bubbling lava flows, mysterious ruins and towering pie structures await. Along the way, Psaro saves the life of the kindly elf Rosi, who accompanies him on his quest to find ever stronger monsters.
For Psaro, the key to success lies in synthesis, which allows you to combine two monsters to create an even stronger offspring. Each new creation brings Psaro one step closer to his goal of becoming the master of monsters.

A world of wonder awaits - From seething lava flows to mountains of candy, the fantastic landscapes of Nadiria are as varied as the monsters that live in them. Each change of season brings great changes. Some inhabitants of this world only appear in certain weather, and alert monster tamers can take advantage of the peculiarities of each season to explore otherwise inaccessible areas.
Tame a myriad of monsters - On your journey, you'll encounter over 500 monsters to recruit, fight and support. These include many never-before-seen creatures, as well as familiar favourites from the DRAGON QUEST franchise.
Creative combination is the recipe for success - synthesise monsters and create your very own individual team - for example, with slimes that are specialists in casting spells or drakos that can deal drastic blows. When it comes to fighting, you decide how much you want to get involved. You can give every command yourself, give your monsters tactics to stick to, or let them do what they want by activating the battle automation.