that the existing level generator could not provide levels of suf-ficient diversity and challenge. A new level generator was there-fore constructed, which can construct harder, more diverse, and(in the opinion of the authors) more interesting levels. Fig. 2 illustrates the workflow of the level generator. The basic idea is to add “zones” from left to right until the required length has been reached, where both the content of the zones and their placement can be modified in multiple ways depending on the parameters given to the generator. In contrast to the original level generator, the new generator has more than 20 tunable parameters.The following parameters are among the most important.