First Impression
Nice Art Style!
Theme ⭐⭐⭐⭐⭐
The time rewind techniques is pretty and fits the topic. However, I never actually used it and I would say it is because the rewinded time window is to short. Sometimes after rewinding the time, it was even harder because I had to reorder where the things are on screen.
Fun ⭐⭐⭐⭐
Absolutely! Would be a cool smartphone game using the gyro, too. :)
Two ideas for improvement:
1) Increase the difficulty between the levels tremendously!
2) Why is there a score, when you have already waves? Especially when I cannot see the score after I died!? ;)
Controls ⭐⭐⭐⭐
Stable. Maby the enemy size could be increased slightly - sometimes it is hard to be exactly on line. The Hyper does solve the problem somehow.
Graphics & Audio ⭐⭐⭐⭐⭐
Nice! I am not the biggest fan of pixel art but this one this well done! Parallax background, shaky cameras and the yellow tails are cool as well. Coler theme fits - nothing to worry about these grafics! Especially I like the ammo-display that follows the player. I wish the hearts would be displayed this way as well, so the player can keep focusing on the avatar.
Originality ⭐⭐
To be honest, this game fairly reminds me of the old space invaders games.
Anyways, you participated your very first time and probably learned a lot! In the game I submitted there is nothing at all that is entire original but isn't the jam about learning Godot? 😊