I've completely forgot you're not aiming at keys at the Challenge, only at money
No, not like that. I already told once that I have a specific pattern:
1st attempt: Start with trees. Win (so that the next games is not so boring and long due to the "longer" timer).
2-14th attempts: NOT to win.
Then everything depends on the malus. If it's +7, then:
Don't win before digging the ground, it's 15-20th attmpts.
21th attempt: win the last one, with digging.
If malus is +5, then I do not win to the archers. Attempts 15-18.
19. Win archers.
20. There are no chances, so try to win 0.01 with the roots.
21. Win digging.
22-24 remain as a spare if I badly failed with digging, or to compensate for the time when the challenges are opened at different times.
I've completely forgot you're not aiming at keys at the Challenge, only at money
It should be noted here that the keys don't really make sense for me, because the last time I won something and I didn't have it in the library, I can't even remember when. Maybe last fall? Yes, there are still games that I did not win, or rather I won many times only non-working keys, I took a few of them in the Arena, thanks to the good people for this, but these are very rare cases, and there is nothing new and will not appear there. There is no point in giving them to the Arena, because there are already plenty of keys for popular games there, they will just lie there as a dead load (how many months will no one need Red Faction or Hard Reset there?) and no one will defeat the greatness of MaxLevch, and on the wishlists already for a long time no one had anything common left. So it's basically winnings for the sake of giveaways. And yes, for the Sakura hunt. I have quite a bit left, but I have almost run out of options.
if not for it's anime adaptations
If an anime was made based on a franchise, it's probably because no one needs it.
Also how many games in the series got those?
I wasn't really ever interested in what the "white" wing of the pirate office was doing, because their translations were bad (this one in particular), and their relationship with buyers with their Star Force was even worse, but I definitely remember that there were two of them and the third was canceled almost on release. Once won one at an some game expo but gave to the friend who had Dreamcast and want it.
It would be more interesting to mention that more than 15 games were released in the series. What is not done with series that are not popular in any way. And which were made in the days when it was not possible to download a ready-made developer tool and make games once a week.
But I'm interested in something else - what are we arguing about?

Because I don't understand something.
There is one series that is not very popular. There is another series that is not very popular. There is a third series, which is not very popular. And there is a character in one of the series that almost no one knows outside of fanbase. But each of them has quite enough number of fans.
All I said is that this character might be a less obvious reference than some other name/title. If we throw out some strange excesses, when someone was make laugh by a random word, or offended by a random word, then that conversation ended where it began. A joke (very subtle and niche), then a joke in return (so niche too). The end.