| Transit to Scorpio | (1972) | Description / Buy at Amazon |
| Warrior Of Scorpio | (1973) | Description / Buy at Amazon |
| Swordships of Scorpio | (1973) | Description / Buy at Amazon |
| The Suns of Scorpio | (1973) | Description / Buy at Amazon |
| Prince of Scorpio | (1974) | Description / Buy at Amazon |
| Manhounds of Antares | (1974) | Description / Buy at Amazon |
| Arena of Antares | (1974) | Description / Buy at Amazon |
| Bladesman of Antares | (1975) | Description / Buy at Amazon |
| Avenger of Antares | (1975) | Description / Buy at Amazon |
| Fliers of Antares | (1975) | Description / Buy at Amazon |
| The Tides of Kregen | (1976) | Description / Buy at Amazon |
| Renegade of Kregen | (1976) | Description / Buy at Amazon |
| Armada of Antares | (1976) | Description / Buy at Amazon |
| Krozair of Kregen | (1977) | Description / Buy at Amazon |
| Secret Scorpio | (1977) | Description / Buy at Amazon |
| Savage Scorpio | (1978) | Description / Buy at Amazon |
| Captive Scorpio | (1978) | Description / Buy at Amazon |
| Golden Scorpio | (1978) | Description / Buy at Amazon |
| A Life for Kregen | (1979) | Description / Buy at Amazon |
| A Sword for Kregen | (1979) | Description / Buy at Amazon |
| A Fortune for Kregen | (1979) | Description / Buy at Amazon |
| Beasts of Antares | (1980) | Description / Buy at Amazon |
| Rebel of Antares | (1980) | Description / Buy at Amazon |
| A Victory for Kregen | (1980) | Description / Buy at Amazon |
| Legions of Antares | (1981) | Description / Buy at Amazon |
| Allies of Antares | (1981) | Description / Buy at Amazon |
| Mazes of Scorpio | (1982) | Description / Buy at Amazon |
| Delia of Vallia | (1982) | Description / Buy at Amazon |
| Fires of Scorpio | (1983) | Description / Buy at Amazon |
| Talons of Scorpio | (1983) | Description / Buy at Amazon |
| Masks of Scorpio | (1984) | Description / Buy at Amazon |
| Seg the Bowman | (1984) | Description / Buy at Amazon |
| Werewolves of Kregen | (1985) | Description / Buy at Amazon |
| Witches of Kregen | (1985) | Description / Buy at Amazon |
| Storm Over Vallia | (1985) | Description / Buy at Amazon |
| The Omens of Kregen | (1985) | Description / Buy at Amazon |
| Warlord of Antares | (1988) | Description / Buy at Amazon |
| Scorpio Ablaze | (1992) | Description / Buy at Amazon |
| Scorpio Drums | (1992) | Description / Buy at Amazon |
| Challenge of Antares | (1995) | Description / Buy at Amazon |
| Shadows over Kregen | (1996) | Description / Buy at Amazon |
| The Saga of Dray Prescot: The Delian Cycle | (2007) | Description / Buy at Amazon |
| Scorpio Reborn | (2008) | Description / Buy at Amazon |
| Scorpio Triumph | (2008) | Description / Buy at Amazon |
| Gangs of Antares | (2008) | Description / Buy at Amazon |
| Spikatur Cycle | (2010) | Description / Buy at Amazon |
| The Lohvian Cycle I | (2011) | Description / Buy at Amazon |
| The Pandahem Cycle I | (2011) | Description / Buy at Amazon |
| The Saga of Dray Prescot: The Pandahem Cycle II | (2011) | Description / Buy at Amazon |
| Demons of Antares | (2014) | Description / Buy at Amazon |
| Scourge of Antares | (2014) | Description / Buy at Amazon |
| Turmoil on Kregen | (2014) | Description / Buy at Amazon |