PokéRogue is a game that you can fight forever while collecting items and discovering a lot of different biomes.
You can plan ahead and switch your Pokemon to match the other player before going up against wild Pokerogue. This is very important because the changes you make to your Pokemon's stats last between wild fights!
As you go through the game, you'll have to make tough choices that will both make your team stronger and make things harder. This risk-reward method makes the game fun and new by making you change your strategies all the time.
You can move your character with the button keys, change things around you with the Z key, and get to your menu with the X key. Battles work like the old-school turn-based games, and you can fight, use items, switch Pokemon, or run away from the battle.
Have fun and good luck!