I started reading Tower of God back when the Company translated the first chapters in english, and I was hooked from the very first chapter. It felt interesting. Original. The characters were intriguing, the setting mysterious, the art colorful and the pace nice and swift. The plot was simple but fun to read, and gradually grew more complex as things moved on.
Season one starts good and only gets better from there. Season two starts a little wonky, but makes up for it with two of the most amazing arcs I've ever seen in graphic form. Up until the start of the "Workshop battle" arc, this was probably my favorite ongoing manga/manhwa to read.
At around that point, however, problems started to show up. For one thing, the author apparently got a hand injury, which resulted in the art becoming less detailed in places and the pacing drastically slowing down. I actually took a break from it for a while at one point, since things were advancing at a crawl that was rather unsatisfied to read from week to week.
That said, it's since recovered from its rough patch and is rising to match and perhaps even exceed its original story, as the plot opens up and events begin to escalate to an epic scale.
Overall, an excellent story to enjoy, filled with twists and mysteries and intense battles. Doesn't quite earn a perfect 10 due to the aforementioned rough spots, but still very much worth reading!