These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ditto, the scene of River City Ransom with the sauna.
Sequelitis: It is said that Technos Japan's over-reliance on the Kunio-kun series, at the expense of their other franchises is what eventually drove the company out of business.
That is to say, the games themselves play perfectly fine, and as the series went on, were just refinement upon refinement on both the Beat Em Up genre as well as fun as hell party games for the sports spin offs. But Technos could have used some variety under their belt.
Uncanny Valley: A common gripe expressed by many fans about the two newest Kunio games released on the Nintendo DS. These games moved the series into the third dimension, and there's ample evidence they made an attempt to preserve the Super-Deformed, blocky proportions of their sprite counterparts, but a very unfortunate sacrifice was still made in the form of the facial expressions, which used to be surprisingly dynamic (and often funny) for such a distinct-looking series, and because limbs often cave into torsos and change size, distinct features are often obscured. To be fair, the games look a great deal better in motion, and the developers actually capitalized upon the 3-D engine by designing courses that utilize it creatively, but it still is a sad compromise.
Fortunately the Nintendo DS is approaching the end of its lifestyle, and its successor is much more powerful, so Kunio games in the future stand to look much better.