Accessing levels 51-100, and fighting DOH.
If you play through the game normally, you'll only access levels 1-50. To gain access to levels 51-100, perform the following: 1. From the title screen, insert a coin, but don't press Start yet. 2. Instead, press Button 1 *THREE* times, and Button 2 *ONCE*, then press Start. If done correctly, you will start on level 51. According to a YouTube user called Bloodreign1 (who posted on https://www.youtube.com/watch?v=6x0u94l8AvE), these stages are much harder, but you'll eventually encounter DOH on level 100.
Effect Code Start on level 51 (unlock harder levels) Insert coin, press Button 1 3 times, Button 2 once, then press Start.
Contributed By: Saviour-V.
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