Amazing game!!
The idea of the camera following the mouse, being able to see more of where the mouse is, was excellent, mainly because of the low resolution.
Loved the variety of spells that can be used in the game and how they work. They're all very differents and can be used for various situations. The default spell is very nice too, the fact that it doesn't run out and it goes in spiral makes a good challenge to use it.
The enemies are simple and challenging, even being all slimes. Liked a lot the boss, it spawns other small slimes and this is great if we ran out of tomes.
The music and SFXs matched very well with the game. Also liked a lot the graphics.
Showing the menu of tomes and slowing down the game was awesome, loved this effect!
A suggestion for the game would be to give more feedback when the tome is chosen in the menu. I didn't get the sensation that it was selected. Also, I was using Shift to open the menu, and had a lot of difficulty with it because I was pressing Caps Lock instead, mainly in fighting moments. I was moving with WASD.
Another suggestion would be to make the game start at Pixel Perfect mode, because of the Jam thematic.
And I had some difficulties indentifying where I was before in the game. A suggestion would be to put more different things in the stage, to identify more easily where the character was before.
But it's a really amazing game!! I've had a lot of fun with it, and would play more stages with more differente enemies!!
Congratulations for the entry!!