TODO
keymap tutorial
add visual feedback for lock timeout (fading tetromino)
leaderboard / name input at the win state
digitize piece / line / clapping sfx
key rebinding?
test win condition (level 999) test GM rank test S9 (last) grade test transition from level ~99 to ~00 test disable of shadow after level 100
bugs collide not triggering at y = 0 fix game not displaying the first tetromino after reset make sure font is loaded before starting game