To defeat all the evil monsters that suddenly crawled out of their holes and took up arms against humanity, you will have to collect crystals. To reach the goal, you can only collect a line of three identical elements. Everything is pretty simple! Just keep in mind that only a certain number of stones of a strictly certain type can destroy a certain monster. If you can't complete the task for a long time, the evil creature may begin to counterattack. Therefore, be careful and proceed with caution. Good luck in the game!