| 1. Scope and Applicability of these Guidelines |
4 |
| 2. Glossary |
4 |
| 3. Measurement Definitions and Other Metrics |
6 |
 3.1. Ad Impressions |
6 |
| 3.1.1 Time of Exposure |
7 |
| 3.1.1.1 Valid Ad Impression |
8 |
| 3.1.1.2 Ad Exposures during Inactivity (idle) Periods |
8 |
| 3.1.1.3 Cool Off Periods |
8 |
| 3.1.1.4 Average Ad Exposure Length per Valid Impression |
9 |
| 3.1.1.5 Average Ad Exposure Time |
9 |
| 3.1.2 Impression Quality |
9 |
| 3.1.2.1 Minimum Ad Size |
9 |
| 3.1.2.2 Lighting |
10 |
| 3.1.2.3 Maximum Ad Angle Relative to Game Screen |
10 |
| 3.1.2.4 Occlusion Determination |
10 |
| 3.1.2.5 Non-Human Activity |
10 |
| 3.1.2.6 Internal Traffic |
10 |
| 3.1.3 Sight-Sound-Motion Ads |
10 |
| 3.1.4 Deferred Impressions |
11 |
| 3.1.5 Session Definition and Inactivity Thresholds |
11 |
| 3.1.6 Frequency and Exposure Capping |
11 |
| 3.1.7 User Attribution |
12 |
| 3.1.8 Engagement |
12 |
| 3.1.9 Other Ad-Impression Considerations |
12 |
| 3.2. Reach |
13 |
| 3.3. Frequency |
13 |
| 4. Auditing Guidelines |
13 |
| 5. General Reporting Parameters |
14 |
| 6. Disclosure Guidance |
15 |
