Similar to any other game like 2048 combine the numbers to get to the 2048 tile.
How to Play 5X5 2048 Game:
Controls of 5x5 2048 remain the same as 2048 original game. But this game is played on a bigger board of 5x5 instead of 4x4. Apart from that,
it is faster as well. Instead of one tile there are two numbers introduced with every move. So, yeah you need to be on top of your game to reach 2048.
How to Win 5X5 2048 Game:
Only the board and gameplay has changed you still have to combine tiles until you reach 2048 numbered tile. Game ends when there is no free space on the board for a tile.