Christmas 1982, my parents bought us a Colecovision, that was the best gift ever and we could barely afford it. Watching this nostalgia brings back great memories
I wish I could speak Japanese myself to answer this question in the same language, but the reason why the Atari 2600 version looks so bad is because Coleco gimped the 2600 port (along with the Intellivision port) in order to make their Colecovision port look amazing. Long story short, it worked and they made a fortune. Obviously, there could've been so much more done on the Atari 2600 version, and indeed so because there's actually a homebrew of the 2600 game that has all 4 stages and looks the part with the arcade game. Feel free to use Google Translate on this to understand what I mean if you don't speak English.