Clear SRAM Data
To clear your saved data, press A+B+Left+Up on Controller 2 while at the title screen.
During gameplay, in any mode, at any message window, do the following:
- At the same time, press A+B on Controller 2, and all of the D-Pad buttons on any combination of Controllers 1 and 2. (You can, for example, press Up+Left on Controller 1 and Down+Right on Controller 2.)
- Next, release all of these buttons.
- Next, hold the same D-Pad button at the same time on both controllers: for example, hold Up on Controllers 1 and 2 together.
- Next, press any other D-Pad button on Controller 1.
- Next, exit the message window by pressing either A or B on Controller 1.
A message "I AM GOD I WISH YOU HAPPY" will scroll across the screen if the cheat was entered correctly. This toggles the debug mode for this game, which makes some changes to the game: it costs nothing to build anything, and you can place any building anywhere, even on top of other buildings, without problems (known as zone stacking).
Note that zone stacking can cause glitches if abused heavily. In any event, to disable the debug mode, if you so choose, repeat the button sequence at a message screen again.
Boston Scenario - Avoid Nuclear Meltdown
Soon after starting the Boston scenario, the nuclear power plants in the area meltdown, which is the primary thing you seek to contend with in this scenario. You can circumvent this entirely - as the scenario loads, hold the B button, and, holding B the entire time, destroy all of the power plants. Let some time pass, and you can safely rebuild them without the threat of a meltdown, making the scenario way easier to deal with.
Once you have a Bank in your city, take out a loan, set your taxes to 0%, your maintenance for transport/etc. to 100%, and spend all of the money you can. You want to assure that, at the end of the year, after maintenance costs, you do not have sufficient funds to pay back the loan. When this happens, the game ends up underflowing the amount of cash you have, giving you hundreds of thousands of dollars instead!
Play Scenarios Longer Than Intended
Most scenarios in Sim City are timed. In the NES prototype, however, you can save during a scenario and reload that file. This completely erases any sort of ending time for the scenario, allowing you to effectively start with a premade city and play it indefinitely.
Rio de Janeiro Scenario - Avoid the Flood
Not long after the Rio de Janeiro scenario starts, a massive flood occurs. You can circumvent this entirely by holding B at the start of the scenario and bulldozing away all of the shorelines. Dr. Wright will still inform you that a flood is occurring but, provided you remove all of the shoreline, there shouldn't be a flood, circumventing the main difficulty of this scenario.
By meeting certain conditions during the building of your city, you may obtain gifts to serve special purposes in your city.
Note that while this NES prototype is very similar to the SNES version, this is one of the aspects in which there are marked differences.
Finally, the Extra Land and Library gifts are not awarded unless you go to Dr. Wright in the options menu.
Unlockable How to Unlock Amusement Park Reach a population of 120,000 people Bank 5 years later after building White House Casino Reach a population of 200,000 Expo Reach the year 1950 Extra Land / "Water Reclaimed" Build two Seaports Fire Headquarters Build 10 Fire Departments Large Park Build 200 tiles of Park area Library Reach a population of 70,000 Obelisk Reach the year 1910 Police Headquarters Build 10 Police Departments Statue of Liberty Reach the year 2000 Train Station Build 150 km of rails White House Reach a population of 10,000 people Zoo Reach a population of 250,000
Two Extra Scenarios
To unlock two further scenarios, complete the six scenarios initially presented to you. You will be given the Las Vegas scenario and the Freeland scenario. The NES prototype is somewhat buggy and both scenarios doesn't meant to be playable at all. There is no UFO disaster in the Las Vegas scenario, no programmed goals or win conditions. Same for the Freeland scenario except it doesn't even properly initialized at start so you'll get a glitch amount of money and semi-random set of available presents.
Know Something We Don't?
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Have We Been Fooled?
You can submit a problem report for any non-working or fake code in the lists above.