The System i Leg (In English, System of Play) was unveiled at the Nuremberg Toy Fair in February 1955.
The Town Plan originally consisted of the existing 700 series LEGO Mursten sets, several new HO scale accessories, and a vinyl play mat. Over the next several years the system was greatly expanded with both new building sets and many HO scale accessory sets, including the following:
- 1955 1247 Esso Pumps/Sign
- 1956 1270 Motorcyclists
- 1956 1271 Traffic Police
- 1957 233 Light Masts
- 1958 260 VW Beetle
The original Automatic Binding Bricks sets and then LEGO Mursten sets were continued to be manufactured under the System i Leg theme.
By 1966 the Town Plan sets were discontinued, and in 1970 the HO 1:87 Vehicles, the last remaining Town Plan component, was discontinued.
Sets
- 005 Basic Building Set in Cardboard
- 010 Basic Building Set
- 010-2 Basic Building Set in Cardboard
- 020 Basic Building Set in Cardboard
- 021 Wheel Set
- 022 Doll Furniture
- 022 Basic Building Set
- 030 Basic Building Set in Cardboard
- 040 Basic Building Set in Cardboard
- 045 36 Assorted Basic Bricks - Clear Plus One Red 10 x 10 Stud Base Plate
- 050 Basic Building Set in Cardboard
- 055 Basic Building Set
- 060 Basic Building Set in Cardboard
- 210 Small Store Set
- 211 Small House Set
- 212 Small House - Left Set
- 213 Small House - Right
- 235 Garage Plate and Door (Gray Base and Door Frame)
- 235 Garage Plate and Door (White Base and Door Frame)
- 236 Garage & Van
- 236 Garage with Automatic Door (Gray base and door frame)
- 236 Garage with Automatic Door (White base and door frame)
- 303 Aeroplane
- 304 Tractor & Trailer
- 305 Fire-Engine
- 306 VW Garage
- 307 VW Auto Showroom
- 308 Fire Station
- 309 Church
- 310 Esso Filling Station
- 311 Aeroplanes
- 312 Boats
- 315 European Taxie
- 321 Clowns
- 323 Train
- 324 House with Garage
- 325 SHELL service station
- 336 Fire Engine
- 340 Blockhouse
- 436 Garage
- 600 Basic Set
- 615 Samsonite Gift Set
- 700/0 Basic Set
- 700/00 Basic Set
- 700/12 Storage Box (empty)
- 700/13 Storage Box (with contents)
- 708 Large Basic Set
- 710 Universal Set with Lockable Storage Box
- 1210 Small Store Set
- 1211 Small House Set
- 1212 Small House - Left Set
- 1213 Small House - Right Set
- 1236 Garage med Automatisk Port
- 1237 Esso Station
- 1247 Esso Pumps/Sign
- 1270 Motorcyclists
- 1271 Traffic Police
- 1300 LEGO Mosaik (Small)
- 1301 LEGO Mosaik (Large)
- 1306 VW Garage
- 1307 VW Auto Showroom
- 1308 Fire Station
- 1309 Church
- 1310 Esso Filling Station