From my Atarisoft FAQ:
| 70251 | Pac-Man | R | Small box. Box little worn. | ||
| 70252 | Defender | R | Small box. | ||
| 70253 | [Do not assign] | NR | Original title cancelled. | ||
| 70254 | Centipede | R | Small box. | ||
| 70255 | Jungle Hunt | NR | Cancelled. Unfinished. 85% complete. | ||
| 70256 | Joust | NR | Cancelled. Unfinished. | ||
| 70257 | Moon Patrol | NR | Cancelled. | ||
| 70258 | Pole Position | NR | Cancelled. Unfinished. | ||
| 70259 | Missile Command | NR | Cancelled. | ||
| 70260 | Galaxian | NR | Cancelled. Unfinished. | ||
| 70261 | Ms. Pac-Man | NR | Cancelled. | ||
| 70262 | Battlezone | NR | Cancelled. | ||
| 70263 | Vanguard | NR | Cancelled. | ||
| 70264 | Dig Dug | NR | Cancelled. Rel by INTV Corp in 1987. |
It seems that one title (70253) has been cancelled already in a very early stadium, I'd love to know which title it was. The rest was probably cancelled later, coding had even started on some games (see list).
Das taugt mir!
Aber mit wenig Ei bitte …
Would like to add a pic of "Dig Dug" as it was released by INTV Corp. in 1987:

The programmer Mark Kennedy put in a hidden game called "Deadly Dogs".You only can activate this program by pressing the numbers 4 and 7 simultaneously on both controllers and the RESET switch.
Gruß an Dieter und alle Retro-Fans!
That´s what I´ve found on the “Intellivision Lives” site:
INTV Corp. bought the remaining inventory of Pac-Man cartridges after Atari stopped distributing them. Sales were still strong enough that when the stock ran out in the mid-1980s, INTV bought the software rights from Atari, relicensed the game from Namco and manufactured new cartridges, removing the Atari logo from the game's title screen and packaging.
Gruß an Dieter und alle Retro-Fans!
Dieter said:
From my Atarisoft FAQ:
70251 Pac-Man R Small box. Box little worn. 70252 Defender R Small box. 70253 [Do not assign] NR Original title cancelled. 70254 Centipede R Small box. 70255 Jungle Hunt NR Cancelled. Unfinished. 85% complete. 70256 Joust NR Cancelled. Unfinished. 70257 Moon Patrol NR Cancelled. 70258 Pole Position NR Cancelled. Unfinished. 70259 Missile Command NR Cancelled. 70260 Galaxian NR Cancelled. Unfinished. 70261 Ms. Pac-Man NR Cancelled. 70262 Battlezone NR Cancelled. 70263 Vanguard NR Cancelled. 70264 Dig Dug NR Cancelled. Rel by INTV Corp in 1987. It seems that one title (70253) has been cancelled already in a very early stadium, I'd love to know which title it was. The rest was probably cancelled later, coding had even started on some games (see list).
could the unnamed cancelled title be... Asteroids? Would be a logic conclusion.
Rauch mehr, dass da Huastn weggageht!