One Key (Valkyries)

One Key - 

A game about unlocking doors, but you only have one key. 

Solve the puzzle, or use your only key. It's up to you.

Depending on how you unlock the doors, you can reach different endings.

Credits:

Programming & Music - Alex Clay (LinkedIn)

Art & Design   - Emma Clay

Notes:

Reload the page to play again.
Not really full screen compatible.
The 2nd level input box: just click once then you can type (sometimes the flashing bar doesn't show).