| Stack-Up needs R.O.B., the Robotic Operating Buddy: the player gets R.O.B. to stack colored discs to match a pattern on the screen. It can be played four ways: Direct mode, a Memory mode that programs up to 100 robot moves, and Bingo for one or two players. | pp. 1-2 (PDF p. 2), Introductionpp. 1-2 (PDF p. 2), Object of the Game/Game Descriptionpp. 1-2 (PDF p. 2), Object of the Game/Game Description | Manual |
| R.O.B.'s attachments for Stack-Up are two hands, five blocks (one each of red, white, blue, yellow, and green), and five trays that fit into the five slots on R.O.B.'s base; Nintendo's 1987 Player's Guide says the Game Pak includes the five colored discs and disc holders. R.O.B. was sold separately. | pp. 5-6 (PDF p. 4), Names of R.O.B.'s Parts and Attachmentspp. 5-6 (PDF p. 4), Names of R.O.B.'s Parts and Attachmentspp. 5-6 (PDF p. 4), Names of R.O.B.'s Parts and Attachmentspp. 5-6 (PDF p. 4), Names of R.O.B.'s Parts and Attachmentspp. 5-6 (PDF p. 4), Names of R.O.B.'s Parts and Attachments | Manual |
| The player doesn't steer R.O.B. with the pad. The pad moves Professor Hector, who jumps up, down, left, and right from key to key on the screen, and R.O.B. moves according to the command key he jumps on; on controller 2 the pad moves Professor Vector. R.O.B. grasps and releases, raises and lowers, and turns and carries objects left and right. | pp. 7-8 (PDF p. 5), Controlspp. 7-8 (PDF p. 5), Controlspp. 7-8 (PDF p. 5), Controlspp. 11-12 (PDF p. 7), Directpp. 11-12 (PDF p. 7), Direct | Manual |
| In Direct mode the player restacks the blocks from a starting configuration to the final one shown in the upper right of the screen, in as few moves and as fast as possible; the faster, the more bonus points. The blocks start on tray 3, in front of R.O.B., from top to bottom red, white, blue, yellow, and green. | pp. 9-10 (PDF p. 6), Directpp. 9-10 (PDF p. 6), Directpp. 9-10 (PDF p. 6), Directpp. 11-12 (PDF p. 7), Direct | Manual |
| In Memory mode the player writes into memory, ahead of time, the commands that should restack the blocks: Professor Hector jumps on a memory key to write the command chosen with A and B onto it, up to 100 keys, ending with an END command or a blank. The player sets the Professor's speed to match R.O.B.'s, and on playback the Professor runs the program to music while R.O.B. restacks the blocks. The faster the program is worked out, the more bonus points. | pp. 11-12 (PDF p. 7), Memorypp. 13-14 (PDF p. 8), Memorypp. 13-14 (PDF p. 8), Memorypp. 13-14 (PDF p. 8), Memorypp. 13-14 (PDF p. 8), Memorypp. 13-14 (PDF p. 8), Memory | Manual |
| In one-player Bingo the commands sit beside the rows and columns of a grid of keys, and the Professor sends one to R.O.B. by making every key in its row or column dark. The bugs Flipper, who flips the keys he passes, and Spike, who crawls around the board, get in the way, and a Professor who runs into one is knocked off the screen and comes back at the re-entry point. A move that completes a row and a column at once sends nothing until one of them is undone. The blocks start in any order, colors don't count, and a dropped block means starting over. | pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player)pp. 15-16 (PDF p. 9), Bingo (1 Player) | Manual |
| Two-player Bingo is head to head: each Professor sends commands the same way, and the player with the most blocks on their own trays after 5 minutes wins. Three blocks start on tray 3 and one each on trays 2 and 4; Professor Hector, on controller 1, has trays 1 and 2, and Professor Vector, on controller 2, trays 4 and 5. Only Spike appears. A Professor knocked off the screen comes back flashing, at half speed for about 20 seconds, and can pass the other Professor and Spike unharmed meanwhile; when the two Professors collide, the one that wasn't moving is knocked off. | pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players)pp. 17-18 (PDF p. 10), Bingo (2 Players) | Manual |
| In Direct, Memory, and one-player Bingo a phase scores 10 × (Par − Step) + Bonus, where Step is the number of commands the Professor sent, Par the average number of steps needed to restack the blocks, and Bonus extra points for restacking them all quickly. | pp. 19-20 (PDF p. 11), Scoringpp. 19-20 (PDF p. 11), Scoringpp. 19-20 (PDF p. 11), Scoringpp. 19-20 (PDF p. 11), Scoringpp. 19-20 (PDF p. 11), Scoring | Manual |