Game infested with obnoxious "SPECIAL ONE-TIME OFFER" popups that occasionally show up to interrupt what you are doing, usually when you run out of energy for the day or when you finish stacking a high level building. Also, settings don't work because the game itself apparently can't connect to the internet or something, so you can't do anything with sound or the horrendous, copy-paste Google Translate translation of the game to your native language.
Used to be a decent idler back before the devs ran off to mobile and crap. That's where the 4+ rating came from. Now it's just memories of what used to be.
Seems like this version is a huge resource hog compared to the old one. If you have a lot of towers, especially Undead ones, skipping to next wave tends to choke the life out of the game. Also, if you play long enough you'll experience short bouts of freezing every few minutes. And, of course, there's the loading screens where you wouldn't expect them to be, like when jumping from the map to the Skills.
Yep, HTML5 version requires more resources than the Flash version due to various reasons, partly technical, partly because this updated version has more stuff.
The two new circles need a little bit of work since they don't have defined upgrade costs and cannot be ascended because the cost for that is $undefined.
I think the lower tier buildings above farm, inn and blacksmith should get a similar upgrade treatment: Higher multipliers, with the difference being smaller the further up you go. For example, Warriors/Slaves could have something like +100%, +175%, +250%, +325%, Orcs/Joust +150%, 200%, 250%, etc. The numbers are just an idea, they could be tiered differently.
Yep, HTML5 version requires more resources than the Flash version due to various reasons, partly technical, partly because this updated version has more stuff.