| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| portal 2 co-op ending | 1.57 | 0.4 | 3196 | 28 |
| portal 2 coop endings | 1.52 | 1 | 5764 | 91 |
| portal 2 coop secret ending | 1.03 | 0.2 | 7313 | 11 |
| portal 2 online co op | 1.22 | 0.4 | 614 | 63 |
| is portal 2 co op | 1.47 | 0.1 | 5004 | 43 |
| portal 2 co op 3-8 | 1.96 | 0.9 | 426 | 9 |
| does portal 2 have local co op | 0.73 | 0.6 | 3123 | 23 |
| portal 2 co op commands | 1.54 | 0.5 | 7179 | 14 |
| co op portal 2 guide | 1.78 | 0.7 | 644 | 70 |
| does portal 2 co op save | 1.01 | 0.2 | 1282 | 53 |
| portal 2 campaign co op | 0.53 | 0.2 | 7363 | 18 |
| portal 2 co-op guide | 0.78 | 0.7 | 6389 | 15 |
| when does portal 2 coop take place | 0.8 | 0.9 | 1375 | 69 |
| does portal 2 have coop | 1.08 | 0.3 | 4131 | 24 |
| does portal 2 coop have a story | 1.09 | 1 | 7042 | 92 |
| how portal 2 coop works | 1.81 | 1 | 8327 | 62 |
| portal 2 coop not working | 0.38 | 0.3 | 439 | 34 |
| portal 2 coop gameplay | 0.63 | 0.5 | 4727 | 7 |
| is portal 2 online coop | 0.96 | 0.7 | 5765 | 91 |
| portal 2 co-op | 0.38 | 0.2 | 5618 | 45 |
| portal 2 local co-op | 1.76 | 0.2 | 2978 | 68 |
| portal 2 good ending | 0.73 | 0.5 | 2077 | 13 |
| ending of portal 2 | 0.78 | 0.1 | 3291 | 89 |
| portal 2 ending guide | 0.14 | 0.2 | 3107 | 69 |
