Solve simple math problems until you die. (Like working as an accountant.)
* To build: `make`
* To package: `make package`
* To get the docs: `make doc`
* To play: `make play`
The problems will come at you. Type the answer and hit enter or they'll kill you. When you die, you can use the key in the top right to return to the same level. Just type it once you start a new game, then hit enter.