Pipe Dream - Game Genie Codes
Start with 1 wrench - PAOALPLA
Start with 6 wrenches - TAOALPLA
Start with 9 wrenches - PAOALPLE
Infinite wrenches - SZKTPUVK
One-way pipes from level 1 - AAOGZZIA
One-way pipes from level 5 - IAOGAZLA
One-way pipes from level 10 - ZAOKPZLE
Tunnels galore - KEUAUVSE
Pumps instead of reservoirs - GPKIEGZP
Pumps before reservoirs - GPKIEGZP + ZPKINGGP