Donal Duck GQ is one of my favourites (esthetically) but NEVER played it apart from minutes because I think there were demos when I was a child but didn't have too much of chance to buy the original cartridge/disc! So I will fix that indeed! It also looks to have some in-depth stuff going on?
I knew that this game in particular has (completely) different games/engines based on platform and I did not know which was the best so thanks for the tip.
(...) Just had a look at versions and DC looks wonderful, however as usually it is for my region, my language is often missing from DC games (in fact no friend heard or knew about Dreamcast back then, probably undersold or not even sold - what a shame considering I believe has one of the best and unique games offering).
And backtracing on DC-no-compatible-language, the N64 instead is multilanguage, so might try that? However mildly undecided knowing that I tried the DC version some time ago and was super fluid.
Regarding
Duck Dogers, do you recall the first stage, around the penultimate level, where there are 2 atoms on the cart highway on the top? There's one atom far away that I supposed I need to backtrack to pick (with a powerup) or to enter the level from a different/secret angle/side. But maybe it's just a lucky double jump? Will re-try either way.
Ok it's suggestion time then?

Gotta play this one pal!
Shinobi for the majestic
GameGear !!!! *_*