Handheld Video Games: 1977 – 2006

An article “A Brief History of Handheld Video Games” shows a progress of handheld video games: from Mattel’s LED-based Handhelds (1977) to PlayStation Portable (2005) and GamePark GP32/GP2X (2006).
When I was child I had a super game “Электроника-ИМ-02” aka “Ну, погоди!” (analog of Nintendo EG-26 (Egg)) where a wolf would catch eggs.