After we had some discussions about how the different Interton carts look like, here's a quick guide. I'll try to take better pics of all the carts and a picture where all the carts are together soon.

Notes:

Acetronic & Radofin carts are beside the color identical to cartridge pong carts by Acetronic, Audio Sonic, Blackpoint, etc.

ITMC carts are identical with the Arcadia carts by Ormatu, Sheen and Intervision and the cartridge pong carts by Unimex (Mark IX), Poppy (9015), Conic (4a8), etc.

Palson and TRQ carts can be played on Interton and Grundig machines, but Interton and Palson carts doesn't fit in TRQ machines.

Acetronic (11 x 9 x 2,3 cm); Radofin (like Acetronic); Fountain (8,2 x 9 x 2,3):

Palson (7,7 x 10,8 x 2,3 cm); Interton (8 x 10,8 x 2,3 cm); Cabel (8 x 5,8 x 1,7 cm):

Voltmace (9 x 12,5 x 2 cm); ITMC (8,7 x 11,8 x 2,2 cm):

Rowtron (14 x 11,2 x 3,2 cm):

OC-2000 (5,6 x 9,8 1,5 cm):

TRQ (8,9 x 11,1 x 2,2 cm):

And the Rowtron carts are big. I think they are the biggest game carts (after the Neo Geo home carts of cause).

Rowtron carts are 14 x 11,2 x 3,2 cm.

Maybe the Xonox Double-Ender carts for the VIC-20 are bigger?

I've edited the first post. You can now find all the different carts, their size and some infos in there.

Dieter said:

Being identical means that they also have the same size and shape?

Yes they have the same size and shape, but sometimes they've used plastic in a different color.

I did a quick check with an Ormatu carts and a ITMC system and they do fit.  (The connectors do have the same size.) Even the consoles look (beside the color) almost the same. Have a look ITMC and Ormatu.

BUT these Arcadia and Interton clones were marked in different countries:

ITMC: France

Ormatu: Netherlands

Sheen 2001 & M1800: Australia

Intervision: Finland, Switzerland and maybe some other countries

Inno Hit: Italy

Dieter said:

Edit: Ok, found it. The two systems share even the same CPU, the Signetics 2650A, and almost the same video chipsete: Signetics 2636 for the Interton family, Signetics 2637 for the Arcadia family. Does anyone have data sheets of those two video chips? If the share the same instruction set, it should not be very hard to make Interton family carts playable on Arcadia family consoles …

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You can find both data sheets (and a lot of other stuff) here.

lucifershalo said:

just won a boxed Rowtron with carts on ebay

still havent tested it yet…

Hi Laurent! Nice to see you here!

Which carts did you get with the Rowtron?

lucifershalo said:

the loose carts  I got are

teleng t.c.s. cartridge n 1 sportsworld

teleng t.c.s. cartridge n 4 maze

rowtron t.c.s. cartridge n 22 alien invasion (with instructions)

I think Sportsworld was a pack-in. I've never seen it boxed.

One more can be found here.