Fireboy and Watergirl 4 Crystal Temple. This duo bested the trials of three other ancient temples. Now they face the most mysterious one yet! Help Fireboy and Watergirl get through each level quickly in this puzzle game. Use the crystals to teleport and collect gems for bonus points. Be sure to keep Fireboy out of the water puddles, Watergirl away from the fire pits, and remember that both of them hate green slime. Enjoy and have fun in playing this free online game on Round Games. If you enjoy this game, you will like to play FireBoy and WaterGirl 2 The Light Temple.