This bachelor’s thesis’s purpose was to determine how the complexity of economic systems invideo games affect the gameplay of said video games, Victoria II (Paradox Interactive AB,2010) and Civilization V (Take-Two Interactive Software, Inc, 2010). This was done by askingthe research question: “How does the complexity of economic systems in grand strategygames affect gameplay?“. The method was rooted in Game Research Methods (Lankoski &Björk, 2015) guidelines and the results were interpreted using Game Mechanics: AdvancedGame Design (Adams & Dormans, 2012). A formal analysis was performed for each game.The key findings of these analyses are extensive descriptions for the functioning of eachgame’s economic system as well as recommendations regarding important aspects of thesesystems and how to design them. / Denna kandidatuppsats mål var att undersöka komplexitet av ekonomiska system inomstrategiska datorspel genom att genomföra en analys för spelen Victoria II (ParadoxInteractive AB, 2010) och Civilization V (Take-Two Interactive Software, Inc, 2010) ochjämföra respektive spel. Detta med forskningsfrågan “Hur påverkar komplexiteten inomekonomiska system gameplay?”. Metoden utfördes utifrån Game Research Methods(Lankoski & Björk, 2015) riktlinjer och tolkades med hjälp av Game Mechanics: AdvancedGame Design (Adams & Dormans, 2012). Forskningen utfördes genom formell analys. Deviktigaste fynden var omfattande nedbrytningar av de ekonomiska systemen för varje spel ochrekommendationer för hur dessa system kan designas.