Not sure what browsers the people are using, who complain about crashes or missing support for something. I can confirm it works without any flaw on Firefox 58.0.2 (current stable). From the comments I got that it works well on Chrome and Opera as well. Seriously people, you shouldn't be running any other browser (including Edge and Safari, I mean, they are ridiculous failures from performance over compatibility to security). Do yourself a favor and use a proper browser (the good ones are free and work on all common platforms (Win, Linux, OSX)).
Apart from that, I need to say this game is amazing. Much potential and one of the top games you can play for free. I think, it would be nice, though, to get a hint on finding the fire tusk. I found it not before playing almost through everything else and only after googling. I didn't expect more than one hidden portal underground.
Tips (maybe for the full game): Add a level selection (so players can revisit older levels for boni). Add some indicator on where the level irreversively ends so the player can decide against it, maybe in case they still want to look for boni/secrets.
It's already there. If you restart the game after finishing it there's a "Continue" where you can choose your level.
Yes An indicator in level 1 is a good idea
Just noticed: The game seems to get more and more laggy (text appears stuttering) when playing in cinematic mode (on Firefox at least). With no cinematic mode I had no issues.
I'm pretty sure this version doesn't contain the third notes. Found all the others. Nice free demo, but it's hard to keep up with the good old free high quality full version games. However, I like the concept (reminds me of The Witness) and graphics. Deserves 5/5.
I waited and waited for the badge and COINCIDENTALLY, TWO DAYS AGO, I thought, f*** it, I'm gonna play it. I waited so long so I wouldn't have to replay only for the badge. I feel really really shit right now. Please greg, communicate with us and give some information from time to time. Apart from that the game is one of the best on this site of course, as all Cube Escape parts.
I think this is a nice basic concept. The game plays well and is fun, but of course it gets repetitive at some time and, like others stated already, it's difficult to lose. One could build a content-full game around this, maybe with random events, different play fields, maybe higher numbers as well, or ...
 "Tales of Nebezem: Golden Scepter"){kind=icon}
 "Medieval Cop 8 -DeathWish- (Part 1)"){kind=icon}
 "Medieval Cop - Dregg Me To Hell"){kind=icon}
 "loops of zen"){kind=icon}
 "Aground"){kind=icon}
 "Frantic"){kind=icon}
 "A knots story"){kind=icon}
 "Pixoji"){kind=icon}
 "Exit/Corners"){kind=icon}
 "Little Wheel"){kind=icon}
 "Faraway: Puzzle Escape"){kind=icon}
 "Burrito Bison"){kind=icon}
 "Cube Escape: The Cave"){kind=icon}
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This is not an RPG game ;)