Minimum:

OS: Windows 7 64Bit Service Pack 1 or higher
Processor: Intel Core 2 Duo 2.4GHz
Memory: 3 GB RAM
Graphics: Nvidia GTS 450+ with 1024MB+ VRAM (excluding GT)
DirectX: Version 11
Storage: 15 GB available space
Sound Card: Direct X 11 sound device
Additional Notes: Not Recommended for Intel integrated graphics. For more detailed specs to optimize the performance of Marvel's Guardians of the Galaxy: The Telltale Series, please visit: http://steamcommunity.com/games/579950/announcements/detail/236845654398215964

Marvel's Guardians of the Galaxy: The Telltale Series screenshots