Shining Soul - Gameboy Advance
Advance mode
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To get the advance mode simply finish the game once with any
character. The advance mode is slightly harder than the normal
mode and you'll encounter a few new ennemies.
Unlimited money
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Enter a shop. Move one of your items to the Sell block and
press R to move it back to your inventory. Next, pick an item
in the shop and move it to your inventory, but do not buy it.
Finally, press R and the item you never bought will jump to the
Sell block. You can sell the shopkeeper their own merchandise.