The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- 1001 Nacht (6 members)
- 10 Inversion Roller Coaster (2 members)
- 10 Inversion Roller Coaster (2nd revision) (3 members)
- 10 Inversion Roller Coaster (media) (8 members)
- 11 Inversion Roller Coaster (1 member)
- 1583 (1 member)
- 1842 (2 members)
- 1843 (1 member)
- 1846 (1 member)
- 1850 (1 member)
- 1860 (1 member)
- 1861 (1 member)
- 1863 (1 member)
- 1864 (1 member)
- 1868 (1 member)
- 1870 (1 member)
- 1871 (1 member)
- 1877 (1 member)
- 1878 (1 member)
- 1879 (2 members)
- 1881 (1 member)
- 1883 (2 members)
- 1884 (2 members)
- 1885 (1 member)
- 1886 (2 members)
- 1887 (3 members)
- 1888 (3 members)
- 1889 (1 member)
- 1890 (2 members)
- 1891 (2 members)
- 1892 (3 members)
- 1893 (3 members)
- 1894 (1 member)
- 1895 (3 members)
- 1896 (3 members)
- 1897 (3 members)
- 1898 (2 members)
- 1899 (1 member)
- 1900 (3 members)
- 1901 (2 members)
- 1902 (3 members)
- 1903 (4 members)
- 1904 (5 members)
- 1905 (4 members)
- 1906 (3 members)
- 1907 (3 members)
- 1908 (4 members)
- 1909 (5 members)
- 1910 (6 members)
- 1911 (3 members)