Are the stats really used, or just hidden from view?
They are still fully used. Hidden Mode runs on the exact same Team OVR formula as Classic Mode — the same scoring, rebounding, assist, steal, and block weighting — the only difference is that your screen does not show the numbers while you draft. The simulation grades your roster on real stats either way, so a lucky guess and an informed pick are scored identically once the season runs.
What is the best way to draft without seeing stats?
Draft by archetype and era instead of by memorized box score. Ask what role a player filled on their real team — primary scorer, defensive anchor, floor general, rebounder — rather than trying to recall an exact stat line. Recognizing the shape of a decade (pace-and-space 2010s versus grind-it-out 1990s) tells you more about likely value than guessing a single number would.
Is Hidden Mode free to play?
Yes. It runs in your browser on desktop and mobile with no download, account, or payment required.