In this game, there are some interesting interactions between rules. There are fire and water tiles in the game, and the player have to push the minion to the goal to win. The player will die when he ran into fire, but the player can pass water and turn them into safe ice tiles. The minion can step through and cease the fire, but it will drawn in water. In addition to those basic rules, the fire ashes and the iced water can be pushed. An interesting combination of those rules is when you push an iced water into fire, they will disappear together, and same thing happens when you do this reversely. This is a successful combination of rules, and this interaction can provoke a sense of satisfaction of the player, because it is intuitive that water and fire consume each other. It follows the physic rules in the real world, so the player will understand it quickly. Besides, when the hot and cold stuff mixed together, it will produce a scene that is satisfactory to watch, there are many videos on YouTube that features this. It would be a good thing if the designer can add some sound effect when this combination happens. The interaction between those water, fire and minion rules can also increase the difficulty of the puzzle, so these rules have the potential to make up harder puzzles. In the final stage of the game, there are many cases that the player can use this combination to cancel out the annoying water and fire tiles, but it becomes a bit weird because it is hard for the player to control where the fire and water tiles are pushed, and it's a bit confusing.