Education researchers are exploring how well-designed video games can be used to improve knowledge, skills, and abilities known as game-based learning (GBL). Current American students are not receiving adequate exposure to authentic ill-structured problem-solving scenarios in their classrooms, and schools need to address the acquisition of problem-solving skills for students in the 21st century (Shute & Wang, 2016). The present study investigated the impact of two distinct types of video gameplay, one roleplaying ("Warcraft") and one brain training game ("CogniFit") on students' problem-solving skills over the course of two semesters. Students playing "Warcraft" significantly improved the rule application component of problem-solving skill on the posttest compared to students playing "CogniFit." Implications for future studies on GBL are discussed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]