The Forest Temple is a cool physics-based adventure game. Instead of one hero, in The Forest Temple, you've got two, and you'll need to use them both to get through the levels. Control WaterGirl with the [W, A, S, D] keys, and direct FireBoy with the arrow keys. At the same time. You'll be collecting diamonds as you make your way to the exit in each level; blue diamonds can only be grabbed by WaterGirl, and red ones are reserved for FireBoy. You'll need to get them both safely to their exit doors if you want to progress, which is easier said than done. Both characters are vulnerable to their opposing elements, such as pools of water or lava, and green pools are deadly to both of them. One wrong move and you'll have to restart the level. (Or click the green button at the bottom of the screen to restart manually if you get stuck.)
If you play as Fireboy then you can walk through the lava lakes; if you play as Watergirl, then you can walk through the water lakes. Neither character can walk through the green lake, though, so don’t even try to walk through them or you will end up dying and making your teammate lose as well.
If you start a level and either win or lose and you want to be paired up with the same person again, then hit the restart button, and if they hit it too, you will be paired with them again. However, if you want a different person, then hit the main menu button instead and then restart the level.
Look out for switches that open doors that you need to get through, as well. One player needs to open the door by standing on the switch, while the other one needs to run through the open door. Once one of you runs through the door, step on the switch on the other side so that the other player can go through the door as well.
Make sure that you are in an area with a good internet connection. If you have a lousy connection, then you are going to have a lousy performance when you play. You should have at least three bars of LTE, or have cable wifi, in order for the connection with the other player to remain strong.
If, even after you have a good connection, you can’t get the game to work right, then shut the game down, and then open it back up. When you open the game back up (in an area with a good connection of course), go to the level select screen again and open the level that you were trying to play, and it should work.
Try to play The Forest Temple now!