The only negative bit in this game, as far as I am concerned is the fact that jumping is so damn difficult. If he would just jump an arm-length (for him) longer, it would have made the game so much more fun. I constantly find myself jumping just a fraction too short and falling into a carnivorous flower or worse.
The graphic however is excellent - and all this in just 185 KB!!!
You really got to hand it to the programmers back in the late 80s early 90s, they sure knew how to minimize the size of a game!

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But the jumping bit takes away one point for me, I'm afraid. So my vote for the game is a 4.
A wonderful game, indeed.