What is that game with the blue stick figure guy?

The game you are referring to is likely "Qbert," a classic arcade game released in 1982. In the game, players control a character named Qbert, a small, orange creature with a large nose, who must jump on a pyramid of cubes to change their color while avoiding enemies. Q*bert is known for its isometric graphics and challenging gameplay, becoming a popular title during the golden age of arcade games.