Title: Todoroke Seiki no Daihatsumei Ai to Okori to Kanashimi no Himitsu Kessha Dai Ni Kagakubu
Original title: 轟け性紀の大発明 愛と怒りと悲しみの秘密結社第二科学部
Length: Short (2 - 10 hours)
Year: Japan 2009-07-24, English Version 2013-06-21
Developer: Anime-seal & Softhouse-Seal
Publishers: MangaGamer
Language: English
Voice: Japanese
Animation: Ero scenes: Some fully animated scenes
Uncensored

Description:

Source: Mangagamer

System Requirements:
Required CPU: Intel Celeron/Pentium4 1.2GHz
Required Memory: 256MB (512MB or more for Vista)
Recommended Memory: 512MB (1GB or more for Vista)
Required Resolution: 800x600
Required Colors: 32bit colors
Sounds: DirectSound
Required Graphics: 32MB VRAM
Required HDD Free Space: 700MB
DirectX: DirectX 8.0a

Important:

1. No need to install version. Run Greatest Inventions.exe and play.

Screenshots: