## 3 Method and Case Study
(2) Photosensitive Epilepsy Analysis Tool (PEAT), version 1.6 [36], allows evaluation in serious games or animations whether the content presents flickering or rapid transitions between light and dark background colors that can generate photosensitive seizures caused by certain types of flashing in serious gameplay, including mouse-overs that cause large areas of the screen to turn on and off quickly. The tool applies some of the WCAG 2.1 and 2.2, including restrictions related to frequency, luminance, area, and color of any flicker. Before analyzing the serious games with PEAT, the games were transformed into format Audio Video Interleave (.AVI) using a batch processing program to take a sample of the video. Phase 7: Record evaluation data. In this phase, we present the registration of the data obtained from the evaluation of the accessibility of serious games with CCA and PEAT tools; the evaluation dataset [37] can be found at [[https://data.mendeley.com/datasets/t2](https://data.mendeley.com/datasets/t2) tr35 ww4c/5]([https://data.mendeley.com/datasets/t2](https://data.mendeley.com/datasets/t2) tr35 ww4c/5). The codes assigned to each column, which correspond to the WCAG success criteria, where C1 = 1.4.3 Contrast (Minimum) \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Guideline** & **Barrier** & **WCAG 2.1** & **Success Criteria** & **Level** \\ \hline G01 & Accessible keyboard & Operable & 2.1.1 & A \\ G02 & Luminance flash failures & Operable & 2.3.1 & A \\ G03 & Animation from Interactions & Operable & 2.3.3 & AAA \\ G04 & Content hovering over focus & Perceivable & 1.4.13 & AA \\ G05 & Easy to read font & Perceivable & 1.1.1 & A \\ G06 & Text alternatives & Perceivable & 1.1.1 & A \\ G07 & Subtitled & Perceivable & 1.2.4 & AA \\ G08 & Automatic transcripts & Perceivable & 1.2.5 & AA \\ G09 & Sign language & Perceivable & 1.2.6 & AAA \\ G10 & Information and relationships & Perceivable & 1.3.1 & A \\ G11 & Sensory characteristics & Perceivable & 1.3.1 & A \\ G12 & Adjust display settings & Perceivable & 1.3.4 & AA \\ G13 & Interface rearrangement & Perceivable & 1.3.5 & AA \\ G14 & Use of color & Perceivable & 1.4.1 & A \\ G15 & Contrast without text & Perceivable & 1.4.11 & AA \\ G16 & Well-spaced elements & Perceivable & 1.4.12 & A \\ G17 & Good audio techniques & Perceivable & 1.4.2 & A \\ G18 & Contrast (Minimum) & Perceivable & 1.4.3 & AA \\ G19 & Images as sharp as possible & Perceivable & 1.4.5 & AA \\ G20 & Visual presentation & Perceivable & 1.4.8 & AAA \\ G21 & Pause, stop, hide & Perceivable & 2.2.2 & A \\ G22 & Contrast (Enhanced) & Perceivable & 1.4.6 & AAA \\ G23 & Screen reader support & Robust & 4.1.2 & A \\ G24 & Status messages & Robust & 4.1.3 & AA \\ G25 & Language & Understandable & 3.1.1 & A \\ G26 & Consistent navigation & Understandable & 3.2.3 & AA \\ G27 & Labels or instructions & Understandable & 3.3.2 & A \\ G28 & Help & Understandable & 3.3.5 & AAA \\ G29 & On Focus & Understandable & 3.2.1 & A \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Guidelines for evaluating accessibility in serious games. AA, Regular Text, C2 = 1.4.3 Contrast (Minimum) AA, Large Text, C3 = 1.4.6 Contrast (Enhanced) AA, Regular Text, C4 = 1. 4.6 Contrast (Enhanced) AAA, Large Text, C5 = 1.4.11 Contrast without text AA (Button Reset), C6 = 1.4.11 Contrast without text AA (Others), P1 = State, P2 = Luminosity flash failures, P3 = Red flash failures, P4 = Extended flash alerts. The number one (1) indicates that the barrier has been exceeded, and the number zero (0) indicates that it has not been exceeded. Figure 3 presents the data recorded in the manual evaluation of the serious games with WCAG 2.1, contains the identifier assigned to each serious game with the 29 guidelines. We place the value of one (1) if the barrier is exceeded and zero (0) when the barrier was not exceeded. In Figure 3, the darkest color represents that the barrier was exceeded and the lightest color that the barrier was not exceeded. Phase 8: Classify and analyze data.