No no no no no, there is no way I would tie you down on some sacred altar, bring around 20 hooded strangers, all holding onto forbidden artifacts as they chant a weird language no one but them knows; none of that!
Just a few drops is fine! :D :D :D
Mi-Ni-Mi 2: A Fancy Reversal.
https://kurogamedev.itch.io/mi-ni-mi-2
Despite a successful rescue of Mrs. Kitty from the wily fox's lair, Mr. Kitty is kidnapped while traveling home. Mrs. Kitty, not knowing where they took him, returns home and finds her magic wand. Surprisingly, the wily fox also shows up. Feeling a bit guilty over what happened before, he tells Mrs. Kitty that Mr. Kitty was taken to Snappy the turtle's lair. Despite it being a dangerous place, Mrs. Kitty is brave and will stop at nothing to rescue her lover.
Explore a labyrinth subdivided into smaller sections. Find 33 upgrades and power-ups, collect the 3 special statues and open up the secret path to Snappy the turtle's lair.

Are you referring to 'going outside', like back to where you started the game?
Curious when bug fixes break something else, huh. I wanted to fix a problem with the music in that room starting before the player goes into the cave, but instead, I break the whole room. I saw the same crash, went back in, fixed the issue, played until I reached that room and it's working fine now.
Thanks for bringing this to my attention. Credit given (of course) and I hope to see you take another crack at this game! :)
I would suggest adding something to control your keyboard movements. Trying to use arrow keys results in the screen sliding up and down (You have to go into full screen mode to play this). Since you are using an eventListener for the keys, you may want to include this in your event line (And substitute 'e' for whatever your variable is):
if(e.keyCode==32||e.keyCode==38||keyCode==40){e.preventDefault()}
Otherwise, I like the challenge of having to control both sides of the board at the same time. :D
https://kurogamedev.itch.io/mi-ni-mi-2
Despite the successful rescue of Mrs. Kitty from the wily fox's lair, Mr. Kitty is kidnapped while traveling home. Mrs. Kitty, not knowing where they took him, returns home and finds her magic wand. Surprisingly, the wily fox also shows up. Feeling a bit guilty over what happened before, he tells Mrs. Kitty that Mr. Kitty was taken to Snappy the turtle's lair. Despite it being a dangerous place, Mrs. Kitty is brave and will stop at nothing to rescue her lover.
Explore a labyrinth subdivided into smaller sections. Find 33 upgrades and power-ups, collect the 3 special statues and open up the secret path to Snappy the turtle's lair.
The game includes the means to save your progress and quickly warp around the various locations in the map.
NOTICE: This game doubles as a prototype for my extended web oscillator player. I can do custom waveforms to sound like other low-end synth instruments. I can also make use of pitch changers, stereo support and I can change effects as a track channel is being played.

I was hit in the Norfair wanna-be area, along the left half of the area somewhere, though I suppose the problem relates to if every warp trigger is coded separately (which I have seen people do) or if you made a 'jack of all trades' function and treat the warp areas as objects (which is what I do). I think it was down to the exact frame where I was hit as I was being warped to the next room, so I would call it a rare bug, but one that happened to hit me (pardon the pun).
I got to the "To be continued" screen, yes. I remember seeing that room with the tall thing and the four different coloured blocks that resembled your key system setup, so it was not hard to figure out. I was a bit surprised to see a lack of final boss, given all things.
I started around 11pm or so and finished around 1:30am, though I had a 15-minute break during that, so... 2 hrs, 15 minutes, which is about as long as some of my longer games. I did die a lot while I played this. On another note, this is the first game I have actually played in a long while.
The biggest complaint? Well...
As for the good? Well...
Overall? You did a heck of a solid job. Your dedication and effort reminds me of what I go through to make my own games.
Managed to find 4 of the hidden messages. Could not find #5 or 6.
It is an interesting game, though I found the backtracking to be a bit excessive.
I noticed two bugs while playing:
* If you are hit while you warp from one room to the next, you can survive the hit.
* If you are at the save point prior to the top-left room (new area for the final 9 batteries), get hit and sent back, the music remains does not revert to what the current room's music should be.