Good job, everyone!
First, to the people who contributed in solving this:
- @theozh (puzzles 1-7)
- @Sconibulus (puzzles 8, 9)
- @caPNCApn (puzzle 10)
...and to those who stopped by:
- @DanDan0101
- @1357924680a
- @PattuX (extra credit for thinking about sequences and even flag ratios, that's creative!)
- @toybaer
- @JS1 (extra credit for thinking about the map of Greece (and even finding an actual animal), that's also creative!)
Clarifications
Puzzle 4:
However, apparently, this should be a compass rose (but shouldn't this have 16 subdivisions?) and ENE stands for East-North-East.
Correct! Of course, putting 16 subdivisions would make it much more obvious–so I decided to use a clock instead.
The arrow to 1 points to West (W) and South (S) or apparently (SSS).
Actually, it's just S. The 2,3 bit tells you that S is the second and third letter 🙂
Puzzle 6:
No idea what the first image should represent, some pads or a door stopper...?
Actually, those are three blank Scrabble tiles (which refer to three letters)! Image taken from here (manually edited).
Puzzle 8:
So, wild guessing led to MM, but why MM=2000?
Well, that's because the number is in OEIS A002000 (I also pointed this out in a comment).
Puzzle 9:
I'm also not sure what this Easter egg in the lower right corner should hint to.
Exactly! I intentionally put it there to make you overthink. You're welcome :)
The black queen hints at the Queen's gambit, where black's only move is d5
Actually... It refers to the Queen's Pawn Game (hence the GAME text), where black plays d5.
Puzzle 10:
[...] that led me to OP's user page where there is evidence of quite an affinity for the "oppih"...
Indeed! The hint was in my profile. (Also, if it's not clear enough, the "I really really like oppihs" bit is actually a joke. I'm not an insane person obsessed with oppihs 🙂 )
Alright, hope you enjoyed this puzzle! Thanks for stopping by.