I'm running the game on Ubuntu Linux (it crashed on boot initially but seemed to work OK after a re-install), but it's been pretty buggy for me overall (eg using my laptop trackpad to zoom out crashed it a couple of times).

Most recently I got up to level 18 and exited the game normally without any issue, so I was quite annoyed when I went to play it tonight to find that I had lost a couple of days worth of progress!

I really can't be bothered to play to level 18 again. Are there any "cheats" or workarounds to let me skip back to level 18 without playing through again? I don't care about scores; just want to carry on from where I left off!