In order for you to play HTR+ Slot Car Simulation on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Win XP/Vista/7/8
Processor (CPU):
Dual Core 800MHz
Memory (RAM):
2 GB RAM
Graphics Card:
512MB with Shader Model 3.0 support
DirectX:
Version 9.0c
Storage:
1500 MB available space