@GirolamoR: Are you the only one seeing a black screen? I'm saw a "Play" button when the game loaded, and after clicking the button I got to a main menu. I then see that I still had my save data from years ago and am Wizard Level 3,335. I hope you get the issue fixed so you can play it, because it's a wonderful game.
@wcrabtre: It looks like someone else had the same problem you did. The Most Recent comments shows that Koddok on Jan. 14, 2019 had the exact same problem.
Note that the Medium badge for reaching the core IS A LONGER ONE but still doable within a few hours. You should be able to do it within 80 days as long as you spend each day's time efficiently and spend your money wisely (you can also go around the world in 80 days, but that's another topic.) I did it in 77 on my first try, and with more practice I should be able to do it even faster. So if you're at 90 days and not done with it yet you're doing something wrong.
@Davtwan and lexef31: There already is: https://www.getsupernova.com/extension/ or https://www.softpedia.com/get/Internet/Internet-Applications-Addons/Chrome-Extensions/SuperNova-SWF-Enabler.shtml. Since it is on Softpedia I'm assuming that it is virus free, but it is still in BETA, so there are bugs being worked out.
@sistermonkey and Gladeshadow: I appreciate when people mention the bugs they run into so I know to avoid them, especially if they are bugs that trap me and force me to refresh the webpage or restart the game.
@archerbob: It's been a long time since I played this game, but the 3 headed dragon can be beaten. Just make sure all your equipment is maxed out and be prepared for a grind as it takes a long time to beat him.
@xyandzisloop: Go to your account page, then click on Comment on the right side of the screen (or as a shortcut go straight to https://www.kongregate.com/accounts/xyandzisloop/comments) and you can view all your previous comments. From there you can delete any comment you've made before. I just found this out a few days ago and I've been on Kongregate for 10 years. It's too bad it isn't made more obvious.
@Yuffie41862: The shield doesn't turn on when taking damage because you don't HAVE a shield. The shield is called a "defensive wave" because it is activated manually by the player, and the defensive wave destroys all enemy attacks in the wave.
@mstrang: Huh, this is the first I've heard about Supernova plugin to keep Flash games running when Adobe officially stops supporting Flash. It's nice to know that people have been working on this issue.