An easier way to make a heater: Make a multi circuit and coat with gas. Now, LET IT BURN! Infinate heat source with optional tendrils coming out! Now, last step: Laugh evily
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For cold: Make a multi line, coat with snow, Laugh evily again.
P.S. How do you change radius?
To make awesome explosive thing: make a circle or closed shape of multi. then coat with metal. Poor electro on it, then flood with gas while sending outward pointing lines of metal coated multi. Keeps exploding either infinitely or for a very long time. If it stops, add more gas. Awesome for fireballs or suns
Some of the symbols are too hard, and the enemies come out too fast for you to react quickly enough. I like the idea of symbols, but it would be nice to have buttons too, so you can choose.
The shooters aren't very smart. When they shoot my monster's mouth, it leaves a bad after taste which forces him to cleanse his pallet with some refreshing raw flesh