- E-bookFalling TimeN E Riggs
- E-bookTomb of the MoonN E Riggs
- E-bookSerie: Thousand Eye UniverseN E Riggs
- E-bookWishing for DeathN E Riggs
- E-bookInto the LightN E Riggs
- E-bookMyth, Murder, & MadnessN E Riggs
- E-bookGray HauntsN E Riggs
- E-bookWhisper in the WoodN E Riggs
- E-bookGray ReckoningN E Riggs
- E-bookIron WillN E Riggs
- E-bookOnly the InevitableN E Riggs
- E-bookOptimizing RoyaltyN E Riggs
- E-bookInside Castle EternalN E Riggs
- E-bookOptimizing ProfitN E Riggs
- E-bookOptimizing MovingN E Riggs
- E-bookCelestial ScourgeN E Riggs
- E-bookSerie: A More Efficient FantasyN E Riggs
- E-bookUnnatural ThingsN E Riggs
- E-bookShadows of an EmpireN E Riggs
- E-bookOptimizing FamilyN E Riggs
- E-bookGray GuardianN E Riggs
- E-bookCaged EarthN E Riggs
- E-bookThe Book of AnanN E Riggs
- E-bookTwisted MindsN E Riggs
- E-bookLost SoulsN E Riggs
- E-bookChildren of ChaosN E Riggs
- E-bookWater for ChildrenN E Riggs
- E-bookLife Across the CosmosN E Riggs
- E-bookShadows of an EmpireN E Riggs
- E-bookFreed SunN E Riggs
- E-bookCenter of the UniverseN E Riggs
- E-bookBloody FireN E Riggs
- E-bookSerie: Shadows of an EmpireN E Riggs
- E-bookGray ParadoxN E Riggs
- E-bookShadows of an EmpireN E Riggs
- E-bookOptimizing EvilN E Riggs
- E-bookSecond ChancesN E Riggs
- E-bookGray PoliceN E Riggs
- E-bookOptimizing SwordplayN E Riggs
- E-bookStone MonstersN E Riggs
- E-bookTree of TimeN E Riggs
- E-bookSerie: Only the InevitableN E Riggs
- E-bookSwift as the WindN E Riggs
- E-bookOnly the InevitableN E Riggs
- E-bookOptimizing AcceptanceN E Riggs