This card game is incredibly popular with my Honors Chemistry class and is now required curriculum at the high school where I teach. The game requires that students write out balanced chemical equations to perform attacks and blocks. The cards specify real binary compounds and their resulting real-life products.
In class, all the teacher must do is write his or her balanced equation specifications for classwork on the board. For example, write (1) Combination Reaction, (1) Double-displacement Reaction and (2) Combustion Reactions on the board as classwork for the students. During the course of the game, students must therefore write down these reactions involving the element cards they play on the table. The students are eager to balance their equations correctly, play the game extensively, and ultimately turn in the classwork for credit.
Students play this game consistently at lunch and during the five-minute breaks between periods. Each student can use his or her individual deck, or at most four students can play with a single deck.
This game is played similarly to Magic: The Gathering or the Pokemon card game, but with real chemical compounds and radioactive materials rather than fictionalized magical attacks.