Very simple but fun... it just takes a lot of time to progress in late stage of the game and even more time to complete all the in-game (not Steam) achievements... some people may also find daily and weekly repetitive quests and challenges boring and annoying "because you have to spend more time in the game than half an hour once a month" and/or because "it's just there to increase the chance of you spending money".
The good thing is that it can be played fully f2p as long as you do all the daily and weekly quests and challenges.

I'm also very interested how things will be going in the future because compared to Steam page, they are almost 2 years behind their plan. BUT as long they're working on it, I'm optimistic that there will be more stuff in the future and it will be a bit more engaging and/or complex than how it is now.

Very simple but fun... it just takes a lot of time to progress in late stage of the game and even more time to complete all the in-game (not Steam) achievements... some people may also find daily and weekly repetitive quests and challenges boring and annoying [i]"because you have to spend more time in the game than half an hour once a month"[/i] and/or because [i]"it's just there to increase the chance of you spending money"[/i]. The good thing is that it can be played fully f2p as long as you do all the daily and weekly quests and challenges. I'm also very interested how things will be going in the future because compared to Steam page, they are almost 2 years behind their plan. BUT as long they're working on it, I'm optimistic that there will be more stuff in the future and it will be a bit more engaging and/or complex than how it is now.