Control your heart with the arrow keys. Use Z to use a command, X to cancel. In this Undertale battle test, your goal is to defeat Testbox. You can do so by killing them or sparing them. To kill Testbox, use the FIGHT command until they are dead. To spare Testbox, use the right ACT command until they are able to be spared and then use the MERCY command. There are a lot of cool things you can do in this engine, so be sure to experiment.
