It's really dated compared to Baldr Sky, the first two routes don't go that deep into the main story, and hell mode's stage 35 is bugged (at least for me) but if you can get over those problems (seriously what the fuck I even did every stage without using the heroine's plugins and hyper mode plugin to see if it unlocks. even did 150+ survival waves) the game is fucking amazing. The gameplay is unique and fun, hell you can cut out the visual novel and it's worth playing. The story and characters are pretty great too and I actually liked it more than Baldr Sky's story mostly because it's more mature. One of my favorite games of all times. Too bad it's kinda tricky to download as there's no way to get a legit copy for the SE PC edition which is the only version of the game that can apply the English patch.