Hard Mode Concept Exploration
Some early concept exploration for Hard Mode feature we launched this summer! Challenge yourself and win double XP ??
Read more on: https://making.duolingo.com/tough-it-up-bringing-hard-mode-to-duolingo-lessons
Some early concept exploration for Hard Mode feature we launched this summer! Challenge yourself and win double XP ??
Read more on: https://making.duolingo.com/tough-it-up-bringing-hard-mode-to-duolingo-lessons
