Pyramid Arcade includes reference cards for each of its 22 games. This is a card for the newer pyramid game called Lava Flows, which matches the other cards in Pyramid Arcade's deck of games.

The card is not necessary to play the game. The rules are online and you just need to have the necessary pyramids and a 3x3 grid.  

(Other reference cards have been created for a dozen fan created games as a stretch goal, plus cards for Jinxx, Nomids, and Bowler Rink.)