Tokobot Cheats 

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Bonus game center:
After finishing the game you will unlock the bonus game center and time trial mode.
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Getting easy parts:
Kill monsters to get Tokobot parts in an area with a door nearby. Exit through the door, then return to the previous area. The monsters will have respawned, and can be killed again for more Tokobot Parts. Repeat this as many times as desired.

Tokobot Offical Website