Tools you need :
1) Cheat Engine 5.5 or Here
2) Firefox
3) RC Tools v5.1
4) Flash Player 9

Open your RC Tools v5.1
1) Open RC Tools v5.1 and click on Stamina Tab
2) Paste code C85D89C33B28408B and FC5D89C33B28408B into the Hex box, set to 8 bytes and check Also scan read-only memory.
3) Scan, get the address and Paste into RC Tools 5.1
4) Click Get Code, and paste the Code under Description
5) Enable Jackal's Workers HP++
6) Check your RC and you will noticed your staffs energy freeze at 100%

*Update:
RC Stamina cheat 28/8/09
Code 1 : D85D89C33B28408B
Code 2 : F05D89C33B28408B

Tools you need :
1) Cheat Engine 5.5 or Here
2) Firefox
3) Flash Player 9

1. Open your RC and Cheat Engine 5.5
2. On Cheat Engine Tick HEX, Also scan Read-only memory and 8 bytes,and when RC loads scan FFFFFFB8D02A0FF2
3. You will Find 1 address, right click it and clicked Disassemble it.
4. You will be able to see mov eax, FFFFFFFF change it to mov eax, 00004e20
5. Go back to Restaurant City and every time your waiter clear the plates you will get an increase of 4,000 exp points.

Guide::

1) Click decorate on Outdoor
2) Buy a new Roof
3) Gift the old Roof to Someone
4) DO NOT click on the tick!!
5) Click the Restaurant city at the bookmark or Refresh Restaurant City
6) Wait it loads....
7) You will notice your Roof has disappear
8) Repeat same process for your Base

Guide::

1. Open Piaip's Restaurant City Hack Tool v1.12

2.
Tick Desired Patches..





3.
Select process... Example:: You Opened Restaurant City on FireFox, Select the icon.





4.

Click On Patch!


5. Enjoy!!!

Download It!!!!::
Piaip's Restaurant City Hack Tool v1.12

Restaurant City - Downgrade level 32 for Coin Cheat / Money Hack

1) Cheat Engine 5.5 or Here
2) Firefox
3) Flash Player 9 and 10
4) Piaip's Restaurant City Hack Tool v1.12

For Flash 9
1) Open your Restaurant City.
2) Patch it using Piaip's Restaurant City Hack Tool v1.12 to allow fast eat, fast serve/cook, auto regeneration
3) Gain at least 1 gourmet point (exp point)
4) Open Cheat Engine, choose your browser in the process list.
5) Tick HEX, 8 bytes, also scan read-only memory
6) Put "00000039840FD285" in the hex Box
7) 1 address returned. (if nth found, READ step 3)
8) Right click, disassemble it
9) You'll see the line "mov ecx,[edx+00000088]"
10) Toggle breakpoint at the line (F5)
11) If CE pause RS at the line, read edx value on right side
12) Remove breakpoint (F5 again)
13) Run (F9)
14) At CE, click add address manually
15) Address = EDX value + 88 in 4byte

For Flash 10
1) Open your Restaurant City.
2) Patch it using Piaip's Restaurant City Hack Tool v1.12 to allow fast eat, fast serve/cook, auto regeneration
3) Gain at least 1 gourmet point (exp point)
4) Open Cheat Engine, choose your browser in the process list.
5) Tick HEX, 8 bytes, also scan read-only memory
6) Put "00000039840FD285" in the hex Box
7) 1 address returned.
8) Right click, disassemble it
9) You'll see the line "mov ecx,[edx+00000090]"
10) Toggle breakpoint at the line (F5)
11) If CE pause Registers at the line, read edx value on right side
12) Remove breakpoint (F5 again)
13) Run (F9)
14) At CE, click add address manually
15) Address = Example: 1E03D0EC + 90 in 4byte

Source:: Admin ( maxout365)