Curiosity is one of the 21st century skills and is especially paramount in the digital age. However, curiosity is multifaceted and can be expressed in many ways. Furthermore, assessment of curiosity is often based on self-report or subjective observations. We present work in progress for the development of a digital quantitative assessment game for question-asking based exploration. The student selects her question-based exploration in a simulated alien world, wherein the game extracts several important quantitative measures which are derived from graph theory and compute different values of questions, e.g. novel information, exposed uncertainty and uniqueness. To evaluate the tool, we aim to conduct a large study with Youth University students who will play with the game and administer a curiosity-based questionnaire to their class guides, as an external validation. [For the complete proceedings, see ED600498.]