Can a corrupted game file lead to a crash on startup?

Oh, yes, corrupted files can definitely crash on startup. I’ve had slot games crash because of poorly configured shared hosting or incomplete file uploads. Check that your entire game file was properly uploaded – not stopped midway! Re-upload if necessary. Make sure your wiki supports the format you’re using (.html5, .exe, Java, etc.). Free hosting sometimes uses aggressive compression, which can ruin your file. Test on different devices and browsers, and use beta testers within your community. Host it on a development page before you post it on your wiki for everyone to see. Do you need help identifying the exact error message?

Sure. A corrupted file can definitely kill the download. If the game fails to load, then it’s likely that your copy of the file is corrupted or incomplete. Try downloading the file manually from the host, ensure a full unzip, and test a local install to see if that works. Other problems include browser incompatibility issues and bad/corrupt cache. More suggestions?