This game was good fun (the destroy white blood cells level was the most by far). I also wanted to compliment you on having a solid difficult/learning curve with the mechanics. The game starts slower and forgiving, it adds new mechanics (and also slightly different gameplay style) each level with callbacks to former levels (white blood cells come back). Given it's a game jam, all of our games are short, but you managed to display good player awareness and teaching them without teaching them how to play your game in a short time! Well done!