In the thesis we use transactional analysis as a lens through which we present psychological games, defined as repeating interpersonal interactions that end with predictably negative feelings for all involved. Our research questions were: what are psychological games and what are their main characteristics; which psychological games in the workplace can we identify; and what is the process of psychological games. With the help of a review of relevant literature we acquaint ourselves with the theoretical context, with an emphasis on the definition, various classifications, kinds of analyses and ways of stopping games, firstly inside the framework of organizational transactional analysis and then in the context of the workplace. In the empirical part we use questions from the Game Plan (originally by John James) to research how games are played in the workplaces of three interviewees. Their answers are then analysed with a combination of three approaches: ascertaining the roles from Karpman's Drama Triangle; recognizing elements of the Game Formula; and use of Analysis of transactions with uncovering of hidden messages (both by Eric Berne). With the analysis of interactions we can better understand our own behaviour, the behaviour of others, and how we are drawn into playing games. Recognition of these processes is key, it helps us stop games and step towards game-free relationships, in our personal lives and in the workplace.