The riddle: "Party game, two words, 8 and 5 letters."
Answer: CHARADES (8) & PICTIONARY (9?) Wait—Pictionary is 9 letters (P-I-C-T-I-O-N-A-R-Y).
CHARADES (8 letters) & PICTIONARY (9 letters) — the two most iconic party games. The "5 letters" might be a misremembered constraint, or the riddle expects CHARADES as the 8-letter answer and ignores the second.
If this is a crossword clue: "Party game (8)" → CHARADES or BALDERDASH.
Provide the exact clue wording if you need a precise fit.