I redownloaded and unzipped it and replaced the file, since the original wasn't opening. It still looked like it wasn't going to open—it said the software "needs to be updated by the developer"—but the popup simultaneously also said Apple couldn't check it for being malicious software. Control-clicking and choosing "open," then choosing "open" on the error popup, worked for me.
Editing to add: Failing that, anytime an application is blocked, you can manually unblock it by going to the Preferences pane > Security & Privacy > General. Click on the lock to make changes (if applicable to you), and at the bottom of the screen should be an alert that the OS has blocked wohgame from opening. Next to that should be a button that says "Open Anyway." That should do it.