Step 1: Download and Install CoolN64 to Your Android Device
Step 2: Open CoolN64. Tap on the Refresh ROMs Toolbar Button.
Step 3: If You Do Not Have Any Games on Your Device, You Can Find the Necessary ROM Files at Romsmania.cc
Step 4: Point CoolN64 to the Game You Would Like to Play by Selecting the Downloads Directory (directory to Which You Downloaded Your ROMs). CoolN64 Will Scan This Directory for ROM Files.