圍城楚歌：抗戰之徐州會戰 ("Siege Songs: Battle of Xuzhou") is a two-player board wargame that simulates the battle of Xuzhou, Dec. 26, 1937 to June. 9, 1938. "Siege Songs" is the second game in the War of Resistance series.
Each turn represents 1 week and each hex is about 10-12 km across. One player commands the Imperial Japanese Army （大日本帝國陸軍） and the other player commands the National Revolutionary Army （國民革命軍）.
In Siege Songs, each player uses operation points to activate Army HQ to lead combat units to move, barrage, combat. In each turn, each player draws tactic markers respectively and roll for initiative. The units include infantry, artillery, cavalry, and tank, etc. The NRA side needs to defend Taieruang and Xuzhou in different scenarios to win the game.
The components includes two 22*34 inches map and 3 5/9 inch die-cut counter boards.