thanks for playing, i decided to go with the minimal explanation and let the player figure it out. Oooo funny u said that, i have played games where they only had WASD but not the arrow keys, and found them annoying too (noted for future games to include wasd control) - ah yes, the correct pathway is hard - maybe an earlier cutscene showing the 4 doors map could helped, or remove the secret path on the map with the blue key, letting the player decide when to use the key might help too (i should have swapped the blue door with either red/green door (to mitigate the requirement to restart if wasted the blue key), and maybe add a few more gems along the way