| Class | Superclass | Slots |
| year population births deaths stores harvest yield plague acres eaten cost feed planted birth-factor rat-factor total-births total-deaths |
| Word | Stack effect |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( game -- n ) | |
| ( -- game ) | |
| ( game n -- game ) | |
| ( game -- ) | |
| ( game -- ) | |
| ( game -- ) | |
| ( game -- game ) | |
| ( game n error -- game n ? ) | |
| ( n -- ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- ) | |
| ( prompt -- n/f ) | |
| ( game -- ) | |
| ( -- ) | |
| ( -- ) | |
| ( -- ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( n -- ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( game -- game ) | |
| ( -- ) | |
| ( game -- game ) |
| Word | Stack effect |
| ( object -- ? ) |