Mega Man Battle Network 5: Team Protoman

After winning the End Area 5 Liberation Mission, there will be a gold Mr. Prog there who will recreate the battle. Talk to him and start the battle. Send a Navi to liberate the first item square and you should obtain 1800 Zennys. Next, retreat. You will leave the battle, however you will keep the 1800 Zennys. Repeat as many times as you want for more Zennys.

This glitch works in the Japanese version of the game only; it was removed in the European and American versions.

First, get into a Liberation Mission and walk Medi up to a panel and select the TwinLiberate ability. Two panels (the one Medi is at and the one at the other end of the row) will be outlined in green. However, select 'No' when Medi asks you to use TwinLiberate.

Switch to another Navi (don't do anything else before this!) and take him to the second panel that was outlined in green (not the one Medi was at) and press 'A' on the panel. See how the command changed from 'Liberate' to 'TwinLiberate', and how that panel and one Medi is at are now outlined in green? Select 'TwinLiberate' and if you win, it will function exactly like Medi's ability - without the Order Point cost.

To use this, you must hold the A button while using Z-Saber, and input the following code on the third slash. You must be holding A while it is slashing, and the code must be inputted on the third slash.