So basically, for the 10th anniversary of Cat Planet's release, the dev released a web version of the game. http://love-game.net/catplanet/

While this is awesome, it should get its own category due to having very inconsistent (honestly, just plain bad) framerate as well as several gameplay influencing changes such as having only one fire bar in the room before pink switch, instead of 4. The starting positions in the room before that are also different. Aside from that, the font is different and there are some cosmetic sloped textures to make a lot of rooms look nicer.

wow, cool! unfortunately the framerate is so low at least for me that it's not really playable. I did one playthrough, and then did one playthrough of normal cat planet at it felt so fast and smooth...

Yeah, closed everything except web cat planet and it still ran at probably half speed at most in the lava section. That being said, I'm pretty sure the ingame timer runs on frames so it wouldn't actually affect the end time.