## 4 Evaluation Methodology
Based on the questionnaire findings, the authors divided the six remaining participants into the three following teams and decided that if participant B returned, he would join team Y (Figure 3):  
* Team X included the \"strong in sound\" participants F and G;
* Team Y included the participants who were identical in all aspects and slightly more confident in gaming, C and D;
* Team Z included the participants A and E.  
After shaping the teams, the authors explained the game rules to the participants. Each team would be stationed in front of a computer with four pdf documents on its desktop and be given four links to corresponding mp3 audio files, which have been uploaded to an online folder. The documents are locked and can only be opened if the correct two-digit password is entered. Each document includes the picture of the corresponding exhibit. Players need to listen to the mp3s and solve the spuzzles to extract the two-digit passwords. There was also a fifth locked document in the author's laptop that would open if all four passwords were inserted in the correct order. That would be the chronological appearance of the typographical processes: typesetting-printing-bookbinding-typing. The team that first solves all four spuzzles and opens the fifth document is the winner. The game would have a maximum duration of 1 h. Every 10 min, the teams get one chance to open each of the documents. This window of opportunity is a restriction that prevents participants from massively trying out different passwords without careful consideration. It would help them to organise their thoughts and prioritise potential solutions. Regarding the fifth document, the inclusion of a meta-puzzle as the endgame is a very common technique in puzzle organisation [48]. Players are presented at once with several subsets of the meta-puzzle as prerequisites for the final solution and can solve them in any order they wish (Figure 4). The authors implemented this strategy in structuring the \begin{table}
\begin{tabular}{c c c c c c} \hline \multirow{2}{*}{**Participant \#**} & **XP in Puzzle** & **XP in Audio** & **XP in Audio** & **XP in Music** & \multirow{2}{*}{**Total**} \\  & **Games** & **Games** & **Tech** & **Education** & \\ \hline A & 3 & 2 & 1 & 1 & 7 \\ \hline B & 2 & 3 & 2 & 3 & 10 \\ \hline C & 4 & 3 & 2 & 2 & 11 \\ \hline D & 4 & 3 & 2 & 2 & 11 \\ \hline E & 3 & 2 & 3 & 3 & 11 \\ \hline F & 2 & 2 & 4 & 4 & 12 \\ \hline G & 4 & 3 & 4 & 4 & 15 \\ \hline \end{tabular}
\end{table} 
Table 2: Participants’ technographic profiles. Figure 3: Organisation of the participants. game for two important reasons. First, a linear path for solving the puzzles would pose the danger that the latter would not be examined if the former were not solved. A non-linear meta-puzzle gives players motivation and freedom to plan their own strategy, whereas the opening of the in-between pdfs essentially reports on their progress. Second, to solve the meta-puzzle, players need to consider the chronological order of the exhibits, and in doing so they engage with their cultural context. This is aligned with a crucial factor proposed in the literature for enhancing learning in the field of virtual heritage, namely to establish a relationship between users, virtual content, and cultural context [49]. After providing the procedural information, the authors provided the narrative context. The participants would play the role of activists that oppose a corrupted tycoon, who has illegally amassed a typographical collection. They have broken into his office and are looking for the password to hack into his cryptocurrency server and destroy his financial empire. They have planted a glitch in the alarm system that allows them to enter potential passwords every 10 min. The authors implemented this fictional setting to excite the participants' curiosity and fantasy and enhance their immersion in the game process. Storytelling is a fundamental element of game design [50] that has also gained a lot of attention in the context of cultural visits [51].