1825 Extension Kit: K3 - Phase Four an expansion for 1825, an 18xx game. It provides tiles and trains to extend the basic game into a fourth phase, may be used with all units and contains: 14 Grey Tiles: 48 (1), 50 (2), 51 (3), 60 (2), 167 (4), 168 (2). 4 Grey/Russet Tiles: 166 (4) 3 trains of type 6. 2 trains of type 7. Use of 1825 Extension Kit: G1 - Supplemental Money is recommended. Ownership of 1825 Unit 1, 1825 Unit 2 or 1825 Unit 3 is required. - BoardGameGeek