| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| does portal take place after half life 2 | 0.19 | 0.7 | 7767 | 87 |
| does portal 2 take place after half life 2 | 1.6 | 0.9 | 3936 | 69 |
| half life 2 portal 2 | 1.99 | 1 | 8330 | 7 |
| portal 2 half life | 1.02 | 0.8 | 4175 | 6 |
| is portal connected to half life | 1.28 | 0.8 | 5909 | 5 |
| is portal before half life | 1.47 | 0.3 | 1779 | 31 |
| is portal part of half life | 0.8 | 0.9 | 3958 | 82 |
| is portal related to half life | 0.54 | 0.2 | 941 | 99 |
| is portal and half life connected | 1.26 | 0.7 | 1681 | 73 |
| half life vs portal | 1.65 | 1 | 8358 | 14 |
| portal done half life 2 | 0.58 | 0.9 | 5587 | 99 |
| is portal in the half life universe | 0.21 | 0.4 | 6389 | 14 |
| portal half life wiki | 0.31 | 0.5 | 6501 | 47 |
