Not bad. The endgame was a bit stale, and I'm not sure how I feel about the prestige upgrades making it harder to earn prestige currency (I opted to postpone buying said upgrades, which I believe worked out very well in my favor, but I think not buying upgrades in a game like this is not a fun mechanic). But overall I did enjoy it. Finding the synergy (even though its very clearly laid out for you) was very rewarding, and even though there is minimal user input the game felt punchy and alive. A great way to kill an hour or two.