Already this time⁉️ And so the day ends...

As others have posted, time certainly melts away. It melts away with 'pure tower defense,' melts away with 'research,' melts away with 'excavation,' and so on... We've implemented what the player base that enjoys tower defense games is looking for, so if you like the core gameplay, you'll definitely get hooked. Conversely, if you're not good at tower defense, you'll probably find it too difficult and won't get hooked. There are a few parts where you just can't progress, so I think it's also for people who enjoy trial and error or reading the wiki to move forward. I definitely recommend it.