The game of today is 'Radiant Historia' a game for nds(dowload drastic emulator in you smartphone or pc). This game is a fusion of classic rpg turn based and some tactics elements. what's so amazing about this game, like most rpg, is it plot and and what make it unique is how thisnplot is completely revolving around time travel. This game one of the few that succeed in making a complete engaging time travel game( Chrono Trigger is much better thought). here is a little more about the plot and gameplay(copied from Wikipedia):
"Radiant Historia is a role-playing video game (RPG) set in a fantasy world and following a group of characters traveling across the war-torn continent of Vainqueur. The game's environments are explored from a top-down perspective, with different zones opening up during the course of the narrative. These self-contained environments are accessed using a world map, and can then be freely explored. Within these environments following the game's opening mission, the main character Stocke can manipulate boxes to clear paths and solve puzzles, in addition to other elements such as destructible objects and treasure chests containing consumables or items such as armor and weapons.
A key part of Radiant Historia is navigating a series of branching stories spread across alternate timelines using a book called the White Chronicle. Given to main protagonist Stocke during the game's opening, it is used to travel between different timelines during the course of the story. After its first use, the Historia can be accessed at special points scattered through the game world. Following a key choice within the story, there are two main timelines and numerous smaller branches from those timelines. Several events within one timeline can only be completed using information or items gathered from the alternate timeline. Events in both timelines are recorded in a journal that can be accessed through the party menu.
Aside from points where the story dictates the player's action, navigating the timelines is a non-linear process. Story segments within each timeline, called "nodes", are color-coded depending on its content; brown nodes are chapters of the main story, blue boxes are events in which the player can make a choice which creates new paths in the timeline and can be revisited to take a different path, and dark boxes indicate a node with a bad ending or no way to continue the narrative. Experience points and currency earned in battles are carried over between timelines. Events across each timeline are tied to side quests the player can complete. While there are multiple endings depending on the path taken by the player, there are only two canon endings; the standard version, and an extended version unlocked by completing all side quests."
Battle(you can skip this):
"Enemies, represented by sprites, are visible while exploring environments. Running into them will trigger a battle, but Stocke can stun them with his sword and either avoid battle or trigger a preemptive attack. A cloaking ability unlocked later in the game enables the party to slip by enemies unseen. Battles take place in a separate arena, with the battle itself and turn order information being displayed respectively on the bottom and top screen. There is an auto-battle function, where the party will automatically perform basic attacks. Successfully defeating the enemy party rewards the player party with money and experience points which level up the party members, giving them higher statistics such as raised health and more powerful attacks.
The arena is divided between Stocke's three-person party and the enemy group. The battlefield itself is laid out on a 3x3 grid, with enemy units being positioned in different squares of the grid, with some enemy types taking up multiple squares. The player party's position is fixed, but enemy units can use their turn to change position on the grid. The battle system itself is turn-based, with each unit on either side being given a chance to perform an action. Rather than each unit acting once an action is decided, each action is queued once selected, and when all actions are selected the two sides perform their actions. The type of actions an enemy unit can perform depends upon their position on the grid; enemies positioned further back have weaker attack power and strong defence, while those at the front will receive more damage while having a higher attack power.
The player party can use specific actions to knock enemy units onto different squares of the grid, which can send enemies into prepared traps, or group enemies into a single square. When the latter happens, attacking the unit within that square using either standard or combination attacks will damage all units. Once the player turn ends, enemy units return to their original positions on the grid. Chaining attacks together increases their effectiveness, which in turn grants a greater reward at the end of a battle. Both sides are able to use the "Change" mechanic. Using this mechanic, unit's place in the action queue can be shifted to another point in the queue, allowing them to take more actions than might otherwise be possible. Using the Change command causes a unit to take more damage until their action is completed. Other actions related to the Change command include erasing an enemy's upcoming turn and switching out the player party's unit turns."
Plot:
"Radiant Historia is set on the continent of Vainqueur, a land populated by humans and Beastribes. Once ruled by an ancient empire, it is now divided between the warring kingdoms of Alistel and Granorg; the root of the war stems from Alistel's belief that Granorg is responsible for the spread of the Sand Plague, a magical illness which drains living beings of their Mana energy and turns them to sand—the desertification of the continent is spreading, further inflaming the conflict. Stocke, an espionage agent for Alistel, is sent by his superior Heiss on a mission with mercenaries Raynie and Marco to escort a spy back to Alistel's capital; before leaving, Stocke is given a book called the "White Chronicle" by Heiss. The group are ambushed by Granorg troops, with only a severely wounded Stocke escaping. He is drawn into Historia, a realm divorced from time, and told by its overseers Teo and Lippti that he can use the White Chronicle to alter events. Stocke makes the mission a success, saving Raynie and Marco along the way.
Over the course of his adventure, Stocke follows two different timelines; one where he remains under Heiss, and one where he becomes part of a military unit led by his friend Rosch. He uses skills acquired in each timeline to proceed further in each role.