ALAMSCIENCERanked duels · 化學排位賽
Ranked collection Climb the Metal Ladder

New players start all-easy. Returning players start just below their last proven level.

Placement → 1850+
    How ranked works
    • Choose Live match for a real-time ranked duel, Ghost match for an instant ranked race against a recorded run, or Practice for an unranked set at your current level.
    • Every mode uses 10 questions, 20s each. Placement uses an ability-matched house opponent; Live matches unlock after placement.
    • More correct wins; tie → faster total time. After placement, chess-style Elo rewards wins against stronger opponents more.
    • Answers are graded on the server. Once placed, your completed runs can become ghosts others face.
    • First 10 duels = adaptive placement (Hydrogen): 8–10 correct steps up, 6–7 holds, and 0–5 steps down.
    • After placement: Iron → Copper → Silver → Gold → Platinum → Uranium → Osmium → Iridium.
    • After placement, question difficulty scales with your rank — your rank IS your syllabus.
    • Quitting an unfinished duel counts as a loss when it expires (8 min).
    • Season end: your final tier becomes a permanent badge; next season you restart at your tier's floor and grind again.
    Season ladder
    #playertierratingW–L–D