The majority of the Slovak and Czech adult population play digital games, be it on a smartphone, tablet, PC, or gaming console. A small proportion of the gamers will develop a pathological gaming pattern. Pathological gaming has already been recognized by both DSM-5 (Internet Gaming Disorder) and ICD 11 (Gaming Disorder). Since 2013, 17 screening instruments based on either of these two classifications have been published in English. Objective: The aim of this study was to adapt the IGDT-10 and the GDT questionnaires and also the clinical interview IGDI to the Slovak language, as neither of those has been available in Slovak or Czech, to preliminarily estimate their diagnostic accuracy (specificity and sensitivity), reliability, and to describe experiences with their use. Method: The sample consisted of 43 gamers that play digital games for at least 20 hours per week. The clinical interview IGDI was conducted only on a subsample of 15 players, who played digital games for an average of 5.5 hours per day. Results: Both questionnaires produced reliable data (ωt = .79 and .83) with their sensitivity being 67% and 57% for IGDT-10 and GDT, respectively. The specificity of both questionnaires was 100%. Conclusion: All three instruments can be used for initial screening, but the clinical interview appears to be superior in terms of the reliability of the results. A larger number of criteria in DSM-5 probably significantly increases sensitivity, but on the other hand, it must be said that the goal of WHO with reduction of the number of criteria was probably to increase specificity, i.e. to reduce false positives even at the cost of reducing sensitivity, as low specificity could be a problematic aspect of screening. Pros and cons of the Slovak versions of the IGDT-10 and GDT questionnaires as well as the IGDI interview are discussed in the paper.