Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Line | Year\nopened | Termini | Termini |
| --- | --- | --- | --- |
| J Church | 1917 | Embarcadero Station | Balboa Park Station |
| K Ingleside | 1918 | Embarcadero Station | Balboa Park Station |
| L Taraval | 1919 | Embarcadero Station | 46th Avenue and Wawona\nSan Francisco Zoo |
| M Ocean View | 1925 | Embarcadero Station | San Jose and Geneva\nBalboa Park Station |
| N Judah | 1928 | 4th and King Station\nCaltrain Depot | Judah and La Playa\nOcean Beach |
| T Third Street | 2007 | West Portal Station | Sunnydale Station |
| S Castro Shuttle\n(peak hours & game days) | N/A | Embarcadero Station\n4th and King Station (game days) | Castro Station\nWest Portal Station (game days) |
Question:
on game days, which line do you want to use?
Answer:
S Castro Shuttle