| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when does the portal game take place | 0.74 | 1 | 3609 | 13 |
| when does portal take place | 0.19 | 0.7 | 6554 | 18 |
| when does portal 1 take place | 0.67 | 0.7 | 4302 | 54 |
| what year does portal take place | 1.06 | 0.8 | 7688 | 69 |
| when does portal 2 take place | 0.06 | 1 | 9983 | 8 |
| what is the portal game about | 0.5 | 0.2 | 4975 | 83 |
| portal game release date | 1.58 | 1 | 6033 | 84 |
| when was the game portal released | 1.17 | 0.6 | 4286 | 38 |
| the portal video game | 1.13 | 0.6 | 7456 | 77 |
| what is the newest portal game | 0.8 | 0.9 | 1366 | 9 |
| what year does portal 2 take place | 0.77 | 0.3 | 2508 | 85 |
| when does portals come out | 0.69 | 0.1 | 7487 | 95 |
| portal 2 game time | 0.76 | 0.5 | 7852 | 27 |
| when is portal set | 1.67 | 0.9 | 118 | 73 |
| portal 1 game release date | 1.05 | 0.4 | 3386 | 80 |
| how long are the portal games | 0.11 | 0.5 | 7323 | 22 |
| what game was portal based on | 1.53 | 0.8 | 3254 | 55 |
| portal video game series | 0.9 | 0.1 | 4634 | 9 |
| when is portals coming out | 0.05 | 0.7 | 3616 | 94 |
