I was visiting my parents this summer and they have a Gameboy from 1991 with a Tetris cartridge, which was authored in 1989. They use it regularly and it still

I was visiting my parents this summer and they have a Gameboy from 1991 with a Tetris cartridge, which was authored in 1989. They use it regularly and it still works! For over 30 years this device has played Tetris without requiring any software updates.