In our recent 7 Wonders play session we've tried playing Babel extension, which triggered a question/thoughts about babel tower add-on.
Specifically tower tile nr. 2 and 15 which states:
These two tiles allow players to ignore the resource cost when constructing military buildings or for a Wonder stage.
Now, while building military buildings virtually for free seems to be very powerful, especially if you are lagging behind in a 3rd age and want to catch up with at least one neighbour, but it felt okay-ish. However, building Wonder stages for free felt like completely messing up game mechanics - some wonders require a lot more of resources to build than others, with a cost and reward system being quite balanced, but with this card open, everyone would just built their wonders within few turns. It felt as if someone switch on god mode. Besides, it wasn't a fair game from that point on, considering how different rewards for Wonders are.
So my question is, whether we've misread/misinterpreted the rules, or does this card really effectively permits building Wonders completely for free for every player, apart from the money, that aren't required for the most of wonder stages?
P.S. And while we are here, tile nr. 20 - " Raw materials cards (brown cards) which produce a unique resource (Lumber Yard, Stone Pit, Clay Pool and Ore Vein) produce an infinite number of resources." felt overpowered as well, just maybe by a lesser degree than the previous ones.