| Extension Name | Extension Type | Category | Dev.Company | File Format |
|---|---|---|---|---|
| .ULX File Extension | Glulx Game File | Game | Andrew Plotkin | Unknown |
| .ZBLORB File Extension | Z-machine Package Game File | Game | Andrew Plotkin | Unknown |
| .ZLB File Extension | Z-machine Package Game File | Game | Andrew Plotkin | Unknown |
| .BLORB File Extension | Interactive Fiction Package Game File | Game | Andrew Plotkin | Unknown |
| .BLB File Extension | Interactive Fiction Package Game File | Game | Andrew Plotkin | Unknown |